22121101233210 has 64 divisors (see below), whose sum is σ = 60679318781952. Its totient is φ = 5055893522496.

The previous prime is 22121101233169. The next prime is 22121101233211. The reversal of 22121101233210 is 1233210112122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22121101233211) 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, 754024 + ... + 6694083.

It is an arithmetic number, because the mean of its divisors is an integer number (948114355968).

Almost surely, 2^{22121101233210} is an apocalyptic number.

22121101233210 is an abundant number, since it is smaller than the sum of its proper divisors (38558217548742).

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

22121101233210 is a wasteful number, since it uses less digits than its factorization.

22121101233210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7462267.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 22121101233210 its reverse (1233210112122), we get a palindrome (23354311345332).

The spelling of 22121101233210 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred one million, two hundred thirty-three thousand, two hundred ten".