122005510513 has 4 divisors (see below), whose sum is σ = 122006223268. Its totient is φ = 122004797760.

The previous prime is 122005510507. The next prime is 122005510553. The reversal of 122005510513 is 315015500221.

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 can be written as a sum of positive squares in 2 ways, for example, as 87203861809 + 34801648704 = 295303^2 + 186552^2 .

It is a cyclic number.

It is not a de Polignac number, because 122005510513 - 2¹³ = 122005502321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122005510553) 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, 72133 + ... + 499213.

It is an arithmetic number, because the mean of its divisors is an integer number (30501555817).

Almost surely, 2^122005510513 is an apocalyptic number.

It is an amenable number.

122005510513 is a deficient number, since it is larger than the sum of its proper divisors (712755).

122005510513 is an equidigital number, since it uses as much as digits as its factorization.

122005510513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712754.

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 122005510513 in words is "one hundred twenty-two billion, five million, five hundred ten thousand, five hundred thirteen".