121223302131 has 32 divisors (see below), whose sum is σ = 171431680000. Its totient is φ = 76060477440.

The previous prime is 121223302097. The next prime is 121223302147. The reversal of 121223302131 is 131203322121.

It is not a de Polignac number, because 121223302131 - 2²⁶ = 121156193267 is a prime.

It is a super-2 number, since 2×121223302131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121223302098 and 121223302107.

It is not an unprimeable number, because it can be changed into a prime (121223300131) 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, 9142995 + ... + 9156243.

It is an arithmetic number, because the mean of its divisors is an integer number (5357240000).

Almost surely, 2^121223302131 is an apocalyptic number.

121223302131 is a deficient number, since it is larger than the sum of its proper divisors (50208377869).

121223302131 is a wasteful number, since it uses less digits than its factorization.

121223302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15979.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121223302131 its reverse (131203322121), we get a palindrome (252426624252).

The spelling of 121223302131 in words is "one hundred twenty-one billion, two hundred twenty-three million, three hundred two thousand, one hundred thirty-one".