22001001010100 has 72 divisors (see below), whose sum is σ = 54928673923200. Its totient is φ = 7492574805120.

The previous prime is 22001001010097. The next prime is 22001001010147. The reversal of 22001001010100 is 101010010022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105365504 + ... + 105574103.

Almost surely, 2^{22001001010100} is an apocalyptic number.

22001001010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001001010100 is an abundant number, since it is smaller than the sum of its proper divisors (32927672913100).

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

22001001010100 is a wasteful number, since it uses less digits than its factorization.

22001001010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210939777 (or 210939770 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 22001001010100 its reverse (101010010022), we get a palindrome (22102011020122).

The spelling of 22001001010100 in words is "twenty-two trillion, one billion, one million, ten thousand, one hundred".