22221212100010 has 384 divisors, whose sum is σ = 54577042555392. Its totient is φ = 6417911808000.

The previous prime is 22221212099971. The next prime is 22221212100011. The reversal of 22221212100010 is 1000121212222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22221212100011) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5731546192 + ... + 5731550068.

It is an arithmetic number, because the mean of its divisors is an integer number (142127714988).

Almost surely, 2^{22221212100010} is an apocalyptic number.

22221212100010 is an abundant number, since it is smaller than the sum of its proper divisors (32355830455382).

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

22221212100010 is a wasteful number, since it uses less digits than its factorization.

22221212100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4878 (or 4871 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22221212100010 its reverse (1000121212222), we get a palindrome (23221333312232).

The spelling of 22221212100010 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, one hundred thousand, ten".