121231132121 has 16 divisors (see below), whose sum is σ = 135977861376. Its totient is φ = 107125200000.

The previous prime is 121231132117. The next prime is 121231132123.

121231132121 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 121231132121 - 2² = 121231132117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121231132093 and 121231132102.

It is not an unprimeable number, because it can be changed into a prime (121231132123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373730 + ... + 618171.

It is an arithmetic number, because the mean of its divisors is an integer number (8498616336).

Almost surely, 2^121231132121 is an apocalyptic number.

121231132121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121231132121 is a deficient number, since it is larger than the sum of its proper divisors (14746729255).

121231132121 is a wasteful number, since it uses less digits than its factorization.

121231132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992224.

The product of its digits is 144, while the sum is 20.

It can be divided in two parts, 121231 and 132121, that added together give a palindrome (253352).

The spelling of 121231132121 in words is "one hundred twenty-one billion, two hundred thirty-one million, one hundred thirty-two thousand, one hundred twenty-one".