22121102012202 has 192 divisors, whose sum is σ = 53115304919040. Its totient is φ = 6880179528000.

The previous prime is 22121102012033. The next prime is 22121102012231. The reversal of 22121102012202 is 20221020112122.

It is a happy number.

22121102012202 is a `hidden beast` number, since 221 + 21 + 1 + 0 + 201 + 220 + 2 = 666.

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 95 ways as a sum of consecutive naturals, for example, 178071003 + ... + 178195185.

It is an arithmetic number, because the mean of its divisors is an integer number (276642213120).

Almost surely, 2^{22121102012202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22121102012202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26557652459520).

22121102012202 is an abundant number, since it is smaller than the sum of its proper divisors (30994202906838).

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

22121102012202 is a wasteful number, since it uses less digits than its factorization.

22121102012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124511 (or 124499 counting only the distinct ones).

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

Adding to 22121102012202 its reverse (20221020112122), we get a palindrome (42342122124324).

The spelling of 22121102012202 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, twelve thousand, two hundred two".