122621115413 has 8 divisors (see below), whose sum is σ = 130283380440. Its totient is φ = 115408104000.

The previous prime is 122621115401. The next prime is 122621115427. The reversal of 122621115413 is 314511126221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19282655044 + 103338460369 = 138862^2 + 321463^2 .

It is not a de Polignac number, because 122621115413 - 2¹⁸ = 122620853269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122621115473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12474338 + ... + 12484163.

It is an arithmetic number, because the mean of its divisors is an integer number (16285422555).

Almost surely, 2^122621115413 is an apocalyptic number.

It is an amenable number.

122621115413 is a deficient number, since it is larger than the sum of its proper divisors (7662265027).

122621115413 is an frugal number, since it uses more digits than its factorization.

122621115413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24958552 (or 24958518 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The spelling of 122621115413 in words is "one hundred twenty-two billion, six hundred twenty-one million, one hundred fifteen thousand, four hundred thirteen".