12210121131 has 16 divisors (see below), whose sum is σ = 17534821920. Its totient is φ = 7512917760.

The previous prime is 12210121081. The next prime is 12210121139. The reversal of 12210121131 is 13112101221.

It is not a de Polignac number, because 12210121131 - 2¹⁰ = 12210120107 is a prime.

It is a super-2 number, since 2×12210121131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12210121131.

It is not an unprimeable number, because it can be changed into a prime (12210121139) 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, 365455 + ... + 397463.

It is an arithmetic number, because the mean of its divisors is an integer number (1095926370).

Almost surely, 2^12210121131 is an apocalyptic number.

12210121131 is a deficient number, since it is larger than the sum of its proper divisors (5324700789).

12210121131 is a wasteful number, since it uses less digits than its factorization.

12210121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41806.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12210121131 its reverse (13112101221), we get a palindrome (25322222352).

The spelling of 12210121131 in words is "twelve billion, two hundred ten million, one hundred twenty-one thousand, one hundred thirty-one".