22121000101010 has 32 divisors (see below), whose sum is σ = 40111620014592. Its totient is φ = 8783335445760.

The previous prime is 22121000100977. The next prime is 22121000101019. The reversal of 22121000101010 is 1010100012122.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22121000100982 and 22121000101000.

It is not an unprimeable number, because it can be changed into a prime (22121000101019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13519751 + ... + 15067370.

It is an arithmetic number, because the mean of its divisors is an integer number (1253488125456).

Almost surely, 2^{22121000101010} is an apocalyptic number.

22121000101010 is a deficient number, since it is larger than the sum of its proper divisors (17990619913582).

22121000101010 is a wasteful number, since it uses less digits than its factorization.

22121000101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28587698.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22121000101010 its reverse (1010100012122), we get a palindrome (23131100113132).

The spelling of 22121000101010 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred one thousand, ten".