22217439156 has 48 divisors (see below), whose sum is σ = 56807159808. Its totient is φ = 6702357600.

The previous prime is 22217439151. The next prime is 22217439169. The reversal of 22217439156 is 65193471222.

It is a happy number.

It is a super-2 number, since 2×22217439156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22217439151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347950 + ... + 406821.

It is an arithmetic number, because the mean of its divisors is an integer number (1183482496).

Almost surely, 2^22217439156 is an apocalyptic number.

It is an amenable number.

22217439156 is an abundant number, since it is smaller than the sum of its proper divisors (34589720652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22217439156 is a wasteful number, since it uses less digits than its factorization.

22217439156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755012 (or 755010 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The spelling of 22217439156 in words is "twenty-two billion, two hundred seventeen million, four hundred thirty-nine thousand, one hundred fifty-six".