22021221001010 has 96 divisors (see below), whose sum is σ = 50305153923648. Its totient is φ = 6863263370880.

The previous prime is 22021221001009. The next prime is 22021221001033. The reversal of 22021221001010 is 1010012212022.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78699872 + ... + 78979188.

It is an arithmetic number, because the mean of its divisors is an integer number (524012020038).

Almost surely, 2^{22021221001010} is an apocalyptic number.

22021221001010 is an abundant number, since it is smaller than the sum of its proper divisors (28283932922638).

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

22021221001010 is a wasteful number, since it uses less digits than its factorization.

22021221001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293976 (or 293969 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22021221001010 its reverse (1010012212022), we get a palindrome (23031233213032).

The spelling of 22021221001010 in words is "twenty-two trillion, twenty-one billion, two hundred twenty-one million, one thousand, ten".