20110100222121 has 32 divisors (see below), whose sum is σ = 34065744642048. Its totient is φ = 10265347149120.

The previous prime is 20110100222111. The next prime is 20110100222141. The reversal of 20110100222121 is 12122200101102.

It is not a de Polignac number, because 20110100222121 - 2⁷ = 20110100221993 is a prime.

It is a super-2 number, since 2×20110100222121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20110100222121.

It is not an unprimeable number, because it can be changed into a prime (20110100222111) 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, 1188110421 + ... + 1188127346.

It is an arithmetic number, because the mean of its divisors is an integer number (1064554520064).

Almost surely, 2^{20110100222121} is an apocalyptic number.

20110100222121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20110100222121 is a deficient number, since it is larger than the sum of its proper divisors (13955644419927).

20110100222121 is a wasteful number, since it uses less digits than its factorization.

20110100222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376237821.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20110100222121 its reverse (12122200101102), we get a palindrome (32232300323223).

The spelling of 20110100222121 in words is "twenty trillion, one hundred ten billion, one hundred million, two hundred twenty-two thousand, one hundred twenty-one".