121210302231 has 16 divisors (see below), whose sum is σ = 180646099200. Its totient is φ = 80322991704.

The previous prime is 121210302223. The next prime is 121210302259. The reversal of 121210302231 is 132203012121.

121210302231 is a `hidden beast` number, since 12 + 121 + 0 + 302 + 231 = 666.

It is not a de Polignac number, because 121210302231 - 2³ = 121210302223 is a prime.

It is a super-2 number, since 2×121210302231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210302271) 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, 13436421 + ... + 13445438.

It is an arithmetic number, because the mean of its divisors is an integer number (11290381200).

Almost surely, 2^121210302231 is an apocalyptic number.

121210302231 is a deficient number, since it is larger than the sum of its proper divisors (59435796969).

121210302231 is a wasteful number, since it uses less digits than its factorization.

121210302231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26882035 (or 26882029 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121210302231 its reverse (132203012121), we get a palindrome (253413314352).

The spelling of 121210302231 in words is "one hundred twenty-one billion, two hundred ten million, three hundred two thousand, two hundred thirty-one".