22105235412 has 72 divisors (see below), whose sum is σ = 60999777384. Its totient is φ = 6708427776.

The previous prime is 22105235387. The next prime is 22105235437. The reversal of 22105235412 is 21453250122.

22105235412 is a `hidden beast` number, since 2 + 2 + 10 + 5 + 235 + 412 = 666.

It is an interprime number because it is at equal distance from previous prime (22105235387) and next prime (22105235437).

It can be written as a sum of positive squares in 4 ways, for example, as 1677393936 + 20427841476 = 40956^2 + 142926^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289353 + ... + 357680.

Almost surely, 2^22105235412 is an apocalyptic number.

It is an amenable number.

22105235412 is an abundant number, since it is smaller than the sum of its proper divisors (38894541972).

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

22105235412 is a wasteful number, since it uses less digits than its factorization.

22105235412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647129 (or 647124 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 22105235412 its reverse (21453250122), we get a palindrome (43558485534).

The spelling of 22105235412 in words is "twenty-two billion, one hundred five million, two hundred thirty-five thousand, four hundred twelve".