122726021 has 8 divisors (see below), whose sum is σ = 134177664. Its totient is φ = 111323520.

The previous prime is 122726011. The next prime is 122726029. The reversal of 122726021 is 120627221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122726021 - 2¹⁴ = 122709637 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 (122726029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6956 + ... + 17141.

It is an arithmetic number, because the mean of its divisors is an integer number (16772208).

Almost surely, 2^122726021 is an apocalyptic number.

122726021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122726021 is a deficient number, since it is larger than the sum of its proper divisors (11451643).

122726021 is a wasteful number, since it uses less digits than its factorization.

122726021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24571.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 122726021 is about 11078.1776931046. The cubic root of 122726021 is about 496.9494541910.

The spelling of 122726021 in words is "one hundred twenty-two million, seven hundred twenty-six thousand, twenty-one".