20110211011100 has 72 divisors (see below), whose sum is σ = 50339429320320. Its totient is φ = 6830490870720.

The previous prime is 20110211011091. The next prime is 20110211011127. The reversal of 20110211011100 is 111011201102.

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, 134172170 + ... + 134321969.

It is an arithmetic number, because the mean of its divisors is an integer number (699158740560).

Almost surely, 2^{20110211011100} is an apocalyptic number.

20110211011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110211011100 is an abundant number, since it is smaller than the sum of its proper divisors (30229218309220).

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

20110211011100 is a wasteful number, since it uses less digits than its factorization.

20110211011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268494267 (or 268494260 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20110211011100 its reverse (111011201102), we get a palindrome (20221222212202).

The spelling of 20110211011100 in words is "twenty trillion, one hundred ten billion, two hundred eleven million, eleven thousand, one hundred".