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1024221223 = 2543402761
BaseRepresentation
bin111101000011000…
…110000000100111
32122101020211101101
4331003012000213
54044200034343
6245344340531
734244510464
oct7503060047
92571224341
101024221223
11486167623
12247014747
1313426aa7c
149a05466b
155edb7e4d
hex3d0c6027

1024221223 has 4 divisors (see below), whose sum is σ = 1024626528. Its totient is φ = 1023815920.

The previous prime is 1024221199. The next prime is 1024221269. The reversal of 1024221223 is 3221224201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221224201 = 13247786477.

It is a cyclic number.

It is not a de Polignac number, because 1024221223 - 225 = 990666791 is a prime.

It is a super-2 number, since 2×10242212232 = 2098058227287231458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1024221223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024227223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198838 + ... + 203923.

It is an arithmetic number, because the mean of its divisors is an integer number (256156632).

Almost surely, 21024221223 is an apocalyptic number.

1024221223 is a deficient number, since it is larger than the sum of its proper divisors (405305).

1024221223 is an equidigital number, since it uses as much as digits as its factorization.

1024221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405304.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1024221223 is about 32003.4564227053. The cubic root of 1024221223 is about 1008.0094189381.

Adding to 1024221223 its reverse (3221224201), we get a palindrome (4245445424).

The spelling of 1024221223 in words is "one billion, twenty-four million, two hundred twenty-one thousand, two hundred twenty-three".

Divisors: 1 2543 402761 1024221223