122600100521 has 4 divisors (see below), whose sum is σ = 122600815044. Its totient is φ = 122599386000.

The previous prime is 122600100503. The next prime is 122600100533. The reversal of 122600100521 is 125001006221.

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 24888217600 + 97711882921 = 157760^2 + 312589^2 .

It is a cyclic number.

It is not a de Polignac number, because 122600100521 - 2⁶ = 122600100457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122600100493 and 122600100502.

It is not an unprimeable number, because it can be changed into a prime (122600100541) 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, 72191 + ... + 500411.

It is an arithmetic number, because the mean of its divisors is an integer number (30650203761).

Almost surely, 2^122600100521 is an apocalyptic number.

It is an amenable number.

122600100521 is a deficient number, since it is larger than the sum of its proper divisors (714523).

122600100521 is an equidigital number, since it uses as much as digits as its factorization.

122600100521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714522.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 122600100521 its reverse (125001006221), we get a palindrome (247601106742).

The spelling of 122600100521 in words is "one hundred twenty-two billion, six hundred million, one hundred thousand, five hundred twenty-one".