122710451621 has 4 divisors (see below), whose sum is σ = 128045688672. Its totient is φ = 117375214572.

The previous prime is 122710451593. The next prime is 122710451627. The reversal of 122710451621 is 126154017221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126154017221 = 37 ⋅3409568033.

It is a cyclic number.

It is not a de Polignac number, because 122710451621 - 2³⁰ = 121636709797 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 (122710451627) 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, 2667618491 + ... + 2667618536.

It is an arithmetic number, because the mean of its divisors is an integer number (32011422168).

Almost surely, 2^122710451621 is an apocalyptic number.

It is an amenable number.

122710451621 is a deficient number, since it is larger than the sum of its proper divisors (5335237051).

122710451621 is an equidigital number, since it uses as much as digits as its factorization.

122710451621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335237050.

The product of its (nonzero) digits is 6720, while the sum is 32.

Adding to 122710451621 its reverse (126154017221), we get a palindrome (248864468842).

The spelling of 122710451621 in words is "one hundred twenty-two billion, seven hundred ten million, four hundred fifty-one thousand, six hundred twenty-one".