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22222132213 = 127174977419
BaseRepresentation
bin10100101100100010…
…101101001111110101
32010100200212021120211
4110230202231033311
5331002331212323
614113025225421
71414454002321
oct245442551765
963320767524
1022222132213
1194738a5926
124382192271
132131b88078
14110b484981
158a0daa70d
hex52c8ad3f5

22222132213 has 4 divisors (see below), whose sum is σ = 22397109760. Its totient is φ = 22047154668.

The previous prime is 22222132147. The next prime is 22222132241. The reversal of 22222132213 is 31223122222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-22222132213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222132243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87488583 + ... + 87488836.

It is an arithmetic number, because the mean of its divisors is an integer number (5599277440).

Almost surely, 222222132213 is an apocalyptic number.

It is an amenable number.

22222132213 is a deficient number, since it is larger than the sum of its proper divisors (174977547).

22222132213 is a wasteful number, since it uses less digits than its factorization.

22222132213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174977546.

The product of its digits is 1152, while the sum is 22.

Adding to 22222132213 its reverse (31223122222), we get a palindrome (53445254435).

Subtracting 22222132213 from its reverse (31223122222), we obtain a palindrome (9000990009).

The spelling of 22222132213 in words is "twenty-two billion, two hundred twenty-two million, one hundred thirty-two thousand, two hundred thirteen".

Divisors: 1 127 174977419 22222132213