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2221221022 = 21110610511
BaseRepresentation
bin1000010001100101…
…0010010010011110
312201210121201102021
42010121102102132
514022113033042
61004224250354
7106021032016
oct20431222236
95653551367
102221221022
11a3a904259
1251ba709ba
13295251787
14171002c46
15d000e867
hex8465249e

2221221022 has 4 divisors (see below), whose sum is σ = 3331831536. Its totient is φ = 1110610510.

The previous prime is 2221221019. The next prime is 2221221053. The reversal of 2221221022 is 2201221222.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2221220987 and 2221221005.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 555305254 + ... + 555305257.

It is an arithmetic number, because the mean of its divisors is an integer number (832957884).

Almost surely, 22221221022 is an apocalyptic number.

2221221022 is a deficient number, since it is larger than the sum of its proper divisors (1110610514).

2221221022 is a wasteful number, since it uses less digits than its factorization.

2221221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110610513.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2221221022 is about 47129.8315507280. The cubic root of 2221221022 is about 1304.7598726326.

Adding to 2221221022 its reverse (2201221222), we get a palindrome (4422442244).

It can be divided in two parts, 22212 and 21022, that added together give a palindrome (43234).

The spelling of 2221221022 in words is "two billion, two hundred twenty-one million, two hundred twenty-one thousand, twenty-two".

Divisors: 1 2 1110610511 2221221022