122120666497 has 4 divisors (see below), whose sum is σ = 122218442500. Its totient is φ = 122022890496.

The previous prime is 122120666453. The next prime is 122120666513. The reversal of 122120666497 is 794666021221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99673435521 + 22447230976 = 315711^2 + 149824^2 .

It is a cyclic number.

It is not a de Polignac number, because 122120666497 - 2¹⁵ = 122120633729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122120666407) 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, 48886128 + ... + 48888625.

It is an arithmetic number, because the mean of its divisors is an integer number (30554610625).

Almost surely, 2^122120666497 is an apocalyptic number.

It is an amenable number.

122120666497 is a deficient number, since it is larger than the sum of its proper divisors (97776003).

122120666497 is an equidigital number, since it uses as much as digits as its factorization.

122120666497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97776002.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 122120666497 in words is "one hundred twenty-two billion, one hundred twenty million, six hundred sixty-six thousand, four hundred ninety-seven".