20211122020100 has 72 divisors (see below), whose sum is σ = 48027159690048. Its totient is φ = 7321553948800.

The previous prime is 20211122020097. The next prime is 20211122020129. The reversal of 20211122020100 is 102022111202.

It is a super-2 number, since 2×20211122020100² (a number of 27 digits) contains 22 as substring.

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, 34641779 + ... + 35220378.

It is an arithmetic number, because the mean of its divisors is an integer number (667043884584).

Almost surely, 2^{20211122020100} is an apocalyptic number.

20211122020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211122020100 is an abundant number, since it is smaller than the sum of its proper divisors (27816037669948).

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

20211122020100 is a wasteful number, since it uses less digits than its factorization.

20211122020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69862445 (or 69862438 counting only the distinct ones).

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

Adding to 20211122020100 its reverse (102022111202), we get a palindrome (20313144131302).

The spelling of 20211122020100 in words is "twenty trillion, two hundred eleven billion, one hundred twenty-two million, twenty thousand, one hundred".