122010021 has 24 divisors (see below), whose sum is σ = 204257664. Its totient is φ = 68735520.

The previous prime is 122010019. The next prime is 122010029. The reversal of 122010021 is 120010221.

It is not a de Polignac number, because 122010021 - 2¹ = 122010019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 122009985 and 122010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9166 + ... + 18111.

It is an arithmetic number, because the mean of its divisors is an integer number (8510736).

Almost surely, 2^122010021 is an apocalyptic number.

It is an amenable number.

122010021 is a deficient number, since it is larger than the sum of its proper divisors (82247643).

122010021 is a wasteful number, since it uses less digits than its factorization.

122010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27361 (or 27358 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 122010021 is about 11045.8146372280. The cubic root of 122010021 is about 495.9811454960.

Adding to 122010021 its reverse (120010221), we get a palindrome (242020242).

The spelling of 122010021 in words is "one hundred twenty-two million, ten thousand, twenty-one".