122020921 has 8 divisors (see below), whose sum is σ = 133221888. Its totient is φ = 110838000.

The previous prime is 122020919. The next prime is 122020933. The reversal of 122020921 is 129020221.

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

It is a cyclic number.

It is not a de Polignac number, because 122020921 - 2¹ = 122020919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122023921) 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, 12411 + ... + 19951.

It is an arithmetic number, because the mean of its divisors is an integer number (16652736).

Almost surely, 2^122020921 is an apocalyptic number.

122020921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122020921 is the 5905-th centered heptagonal number.

It is an amenable number.

122020921 is a deficient number, since it is larger than the sum of its proper divisors (11200967).

122020921 is a wasteful number, since it uses less digits than its factorization.

122020921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9023.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 122020921 is about 11046.3080257614. The cubic root of 122020921 is about 495.9959148662.

The spelling of 122020921 in words is "one hundred twenty-two million, twenty thousand, nine hundred twenty-one".