122561151 has 4 divisors (see below), whose sum is σ = 163414872. Its totient is φ = 81707432.

The previous prime is 122561129. The next prime is 122561161. The reversal of 122561151 is 151165221.

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 122561151 - 2²³ = 114172543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122561161) 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, 20426856 + ... + 20426861.

It is an arithmetic number, because the mean of its divisors is an integer number (40853718).

Almost surely, 2^122561151 is an apocalyptic number.

122561151 is a deficient number, since it is larger than the sum of its proper divisors (40853721).

122561151 is an equidigital number, since it uses as much as digits as its factorization.

122561151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40853720.

The product of its digits is 600, while the sum is 24.

The square root of 122561151 is about 11070.7339865069. The cubic root of 122561151 is about 496.7268206848.

The spelling of 122561151 in words is "one hundred twenty-two million, five hundred sixty-one thousand, one hundred fifty-one".