22121221101010 has 64 divisors (see below), whose sum is σ = 41998625827200. Its totient is φ = 8365840330752.

The previous prime is 22121221100987. The next prime is 22121221101019. The reversal of 22121221101010 is 1010112212122.

It is not an unprimeable number, because it can be changed into a prime (22121221101019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406590469 + ... + 406644871.

It is an arithmetic number, because the mean of its divisors is an integer number (656228528550).

Almost surely, 2^{22121221101010} is an apocalyptic number.

22121221101010 is a deficient number, since it is larger than the sum of its proper divisors (19877404726190).

22121221101010 is a wasteful number, since it uses less digits than its factorization.

22121221101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58715.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22121221101010 its reverse (1010112212122), we get a palindrome (23131333313132).

The spelling of 22121221101010 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, ten".