121431032212243 has 16 divisors (see below), whose sum is σ = 131518435618080. Its totient is φ = 111450431736576.

The previous prime is 121431032212219. The next prime is 121431032212249. The reversal of 121431032212243 is 342212230134121.

It is a cyclic number.

It is not a de Polignac number, because 121431032212243 - 2²⁵ = 121430998657811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121431032212249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15999871 + ... + 22335127.

It is an arithmetic number, because the mean of its divisors is an integer number (8219902226130).

Almost surely, 2^{121431032212243} is an apocalyptic number.

121431032212243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121431032212243 is a deficient number, since it is larger than the sum of its proper divisors (10087403405837).

121431032212243 is a wasteful number, since it uses less digits than its factorization.

121431032212243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343686.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 121431032212243 its reverse (342212230134121), we get a palindrome (463643262346364).

The spelling of 121431032212243 in words is "one hundred twenty-one trillion, four hundred thirty-one billion, thirty-two million, two hundred twelve thousand, two hundred forty-three".