122601559 has 4 divisors (see below), whose sum is σ = 126556480. Its totient is φ = 118646640.

The previous prime is 122601533. The next prime is 122601599. The reversal of 122601559 is 955106221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955106221 = 12829 ⋅74449.

It is a cyclic number.

It is not a de Polignac number, because 122601559 - 2¹⁷ = 122470487 is a prime.

It is a super-2 number, since 2×122601559² = 30062284538460962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 3954889 = 122601559 / (1 + 2 + 2 + 6 + 0 + 1 + 5 + 5 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122601559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122601599) 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, 1977414 + ... + 1977475.

It is an arithmetic number, because the mean of its divisors is an integer number (31639120).

Almost surely, 2^122601559 is an apocalyptic number.

122601559 is a deficient number, since it is larger than the sum of its proper divisors (3954921).

122601559 is an equidigital number, since it uses as much as digits as its factorization.

122601559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954920.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 122601559 is about 11072.5588280216. The cubic root of 122601559 is about 496.7814044083.

The spelling of 122601559 in words is "one hundred twenty-two million, six hundred one thousand, five hundred fifty-nine".