121131221323101 has 32 divisors (see below), whose sum is σ = 177990046185600. Its totient is φ = 72663650592000.

The previous prime is 121131221323087. The next prime is 121131221323117. The reversal of 121131221323101 is 101323122131121.

It is not a de Polignac number, because 121131221323101 - 2¹¹ = 121131221321053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131221327101) 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, 5256175 + ... + 16428323.

It is an arithmetic number, because the mean of its divisors is an integer number (5562188943300).

Almost surely, 2^{121131221323101} is an apocalyptic number.

121131221323101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121131221323101 is a deficient number, since it is larger than the sum of its proper divisors (56858824862499).

121131221323101 is a wasteful number, since it uses less digits than its factorization.

121131221323101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11175517.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 121131221323101 its reverse (101323122131121), we get a palindrome (222454343454222).

The spelling of 121131221323101 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, two hundred twenty-one million, three hundred twenty-three thousand, one hundred one".