121212231031 has 8 divisors (see below), whose sum is σ = 124698281760. Its totient is φ = 117770588832.

The previous prime is 121212231017. The next prime is 121212231037. The reversal of 121212231031 is 130132212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121212231031 - 2³⁵ = 86852492663 is a prime.

It is a super-2 number, since 2×121212231031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212231037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11096596 + ... + 11107513.

It is an arithmetic number, because the mean of its divisors is an integer number (15587285220).

Almost surely, 2^121212231031 is an apocalyptic number.

121212231031 is a deficient number, since it is larger than the sum of its proper divisors (3486050729).

121212231031 is a wasteful number, since it uses less digits than its factorization.

121212231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22204265.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121212231031 its reverse (130132212121), we get a palindrome (251344443152).

The spelling of 121212231031 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred thirty-one thousand, thirty-one".