122875821 has 12 divisors (see below), whose sum is σ = 185204448. Its totient is φ = 78355464.

The previous prime is 122875799. The next prime is 122875843. The reversal of 122875821 is 128578221.

It is an interprime number because it is at equal distance from previous prime (122875799) and next prime (122875843).

It is not a de Polignac number, because 122875821 - 2⁹ = 122875309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122875021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296595 + ... + 297008.

It is an arithmetic number, because the mean of its divisors is an integer number (15433704).

Almost surely, 2^122875821 is an apocalyptic number.

It is an amenable number.

122875821 is a deficient number, since it is larger than the sum of its proper divisors (62328627).

122875821 is a wasteful number, since it uses less digits than its factorization.

122875821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593632 (or 593629 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 122875821 is about 11084.9366709964. The cubic root of 122875821 is about 497.1515649839.

The spelling of 122875821 in words is "one hundred twenty-two million, eight hundred seventy-five thousand, eight hundred twenty-one".