122011021 has 16 divisors (see below), whose sum is σ = 139471488. Its totient is φ = 105652800.

The previous prime is 122010983. The next prime is 122011031. The reversal of 122011021 is 120110221.

It is not a de Polignac number, because 122011021 - 2⁷ = 122010893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122010989 and 122011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69211 + ... + 70951.

It is an arithmetic number, because the mean of its divisors is an integer number (8716968).

Almost surely, 2^122011021 is an apocalyptic number.

122011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122011021 is a deficient number, since it is larger than the sum of its proper divisors (17460467).

122011021 is a wasteful number, since it uses less digits than its factorization.

122011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 122011021 is about 11045.8599031492. The cubic root of 122011021 is about 495.9825005207.

Adding to 122011021 its reverse (120110221), we get a palindrome (242121242).

It can be divided in two parts, 1 and 22011021, that added together give a palindrome (22011022).

The spelling of 122011021 in words is "one hundred twenty-two million, eleven thousand, twenty-one".