122520516131 has 4 divisors (see below), whose sum is σ = 131945171232. Its totient is φ = 113095861032.

The previous prime is 122520516113. The next prime is 122520516133. The reversal of 122520516131 is 131615025221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131615025221 = 397 ⋅331523993.

It is a cyclic number.

It is not a de Polignac number, because 122520516131 - 2⁶ = 122520516067 is a prime.

It is a super-2 number, since 2×122520516131² (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 = 122520516094 and 122520516103.

It is not an unprimeable number, because it can be changed into a prime (122520516133) 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, 4712327531 + ... + 4712327556.

It is an arithmetic number, because the mean of its divisors is an integer number (32986292808).

Almost surely, 2^122520516131 is an apocalyptic number.

122520516131 is a deficient number, since it is larger than the sum of its proper divisors (9424655101).

122520516131 is an equidigital number, since it uses as much as digits as its factorization.

122520516131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9424655100.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 122520516131 in words is "one hundred twenty-two billion, five hundred twenty million, five hundred sixteen thousand, one hundred thirty-one".