122123021131 has 4 divisors (see below), whose sum is σ = 122123738952. Its totient is φ = 122122303312.

The previous prime is 122123021107. The next prime is 122123021147. The reversal of 122123021131 is 131120321221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 122123021131 - 2²¹ = 122120923979 is a prime.

It is a super-2 number, since 2×122123021131² (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 = 122123021099 and 122123021108.

It is not an unprimeable number, because it can be changed into a prime (122123021231) 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, 56736 + ... + 497458.

It is an arithmetic number, because the mean of its divisors is an integer number (30530934738).

Almost surely, 2^122123021131 is an apocalyptic number.

122123021131 is a deficient number, since it is larger than the sum of its proper divisors (717821).

122123021131 is an equidigital number, since it uses as much as digits as its factorization.

122123021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717820.

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

Adding to 122123021131 its reverse (131120321221), we get a palindrome (253243342352).

The spelling of 122123021131 in words is "one hundred twenty-two billion, one hundred twenty-three million, twenty-one thousand, one hundred thirty-one".