122031212131 has 4 divisors (see below), whose sum is σ = 122052017592. Its totient is φ = 122010406672.

The previous prime is 122031212129. The next prime is 122031212137. The reversal of 122031212131 is 131212130221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122031212131 - 2¹ = 122031212129 is a prime.

It is a super-2 number, since 2×122031212131² (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 = 122031212099 and 122031212108.

It is not an unprimeable number, because it can be changed into a prime (122031212137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10393930 + ... + 10405663.

It is an arithmetic number, because the mean of its divisors is an integer number (30513004398).

Almost surely, 2^122031212131 is an apocalyptic number.

122031212131 is a deficient number, since it is larger than the sum of its proper divisors (20805461).

122031212131 is an equidigital number, since it uses as much as digits as its factorization.

122031212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20805460.

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

Adding to 122031212131 its reverse (131212130221), we get a palindrome (253243342352).

The spelling of 122031212131 in words is "one hundred twenty-two billion, thirty-one million, two hundred twelve thousand, one hundred thirty-one".