122520155117567 has 4 divisors (see below), whose sum is σ = 122523349861536. Its totient is φ = 122516960373600.

The previous prime is 122520155117561. The next prime is 122520155117621. The reversal of 122520155117567 is 765711551025221.

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

It is a cyclic number.

It is not a de Polignac number, because 122520155117567 - 2⁴ = 122520155117551 is a prime.

It is a super-2 number, since 2×122520155117567² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122520155117561) 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, 1597314458 + ... + 1597391159.

It is an arithmetic number, because the mean of its divisors is an integer number (30630837465384).

Almost surely, 2^{122520155117567} is an apocalyptic number.

122520155117567 is a deficient number, since it is larger than the sum of its proper divisors (3194743969).

122520155117567 is an equidigital number, since it uses as much as digits as its factorization.

122520155117567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194743968.

The product of its (nonzero) digits is 1470000, while the sum is 50.

The spelling of 122520155117567 in words is "one hundred twenty-two trillion, five hundred twenty billion, one hundred fifty-five million, one hundred seventeen thousand, five hundred sixty-seven".