121013203210131 has 32 divisors (see below), whose sum is σ = 172151273403648. Its totient is φ = 75348062366720.

The previous prime is 121013203210127. The next prime is 121013203210169. The reversal of 121013203210131 is 131012302310121.

It is a cyclic number.

It is not a de Polignac number, because 121013203210131 - 2² = 121013203210127 is a prime.

It is a super-2 number, since 2×121013203210131² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121013203210098 and 121013203210107.

It is not an unprimeable number, because it can be changed into a prime (121013203210121) 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, 249205936 + ... + 249691058.

It is an arithmetic number, because the mean of its divisors is an integer number (5379727293864).

Almost surely, 2^{121013203210131} is an apocalyptic number.

121013203210131 is a deficient number, since it is larger than the sum of its proper divisors (51138070193517).

121013203210131 is a wasteful number, since it uses less digits than its factorization.

121013203210131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522611.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 121013203210131 its reverse (131012302310121), we get a palindrome (252025505520252).

The spelling of 121013203210131 in words is "one hundred twenty-one trillion, thirteen billion, two hundred three million, two hundred ten thousand, one hundred thirty-one".