22001212112202 has 48 divisors (see below), whose sum is σ = 47728887602760. Its totient is φ = 7324574332416.

The previous prime is 22001212112147. The next prime is 22001212112221. The reversal of 22001212112202 is 20221121210022.

It is a happy number.

22001212112202 is a `hidden beast` number, since 220 + 0 + 1 + 212 + 11 + 220 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17672195076561 + 4329017035641 = 4203831^2 + 2080629^2 .

It is a super-2 number, since 2×22001212112202² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 49266574 + ... + 49711142.

Almost surely, 2^{22001212112202} is an apocalyptic number.

22001212112202 is an abundant number, since it is smaller than the sum of its proper divisors (25727675490558).

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

22001212112202 is a wasteful number, since it uses less digits than its factorization.

22001212112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448007 (or 448004 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22001212112202 its reverse (20221121210022), we get a palindrome (42222333322224).

The spelling of 22001212112202 in words is "twenty-two trillion, one billion, two hundred twelve million, one hundred twelve thousand, two hundred two".