22101405252 has 24 divisors (see below), whose sum is σ = 51574946976. Its totient is φ = 7366420608.

The previous prime is 22101405199. The next prime is 22101405257. The reversal of 22101405252 is 25250410122.

It is a super-2 number, since 2×22101405252² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22101405257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48028 + ... + 215660.

It is an arithmetic number, because the mean of its divisors is an integer number (2148956124).

Almost surely, 2^22101405252 is an apocalyptic number.

It is an amenable number.

22101405252 is an abundant number, since it is smaller than the sum of its proper divisors (29473541724).

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

22101405252 is a wasteful number, since it uses less digits than its factorization.

22101405252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178627 (or 178625 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 22101405252 its reverse (25250410122), we get a palindrome (47351815374).

The spelling of 22101405252 in words is "twenty-two billion, one hundred one million, four hundred five thousand, two hundred fifty-two".