122013021 has 16 divisors (see below), whose sum is σ = 176322944. Its totient is φ = 74602944.

The previous prime is 122013011. The next prime is 122013043. The reversal of 122013021 is 120310221.

It is not a de Polignac number, because 122013021 - 2²¹ = 119915869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122012988 and 122013006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122013011) 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, 3841 + ... + 16086.

It is an arithmetic number, because the mean of its divisors is an integer number (11020184).

Almost surely, 2^122013021 is an apocalyptic number.

It is an amenable number.

122013021 is a deficient number, since it is larger than the sum of its proper divisors (54309923).

122013021 is a wasteful number, since it uses less digits than its factorization.

122013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20100.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 122013021 is about 11045.9504344352. The cubic root of 122013021 is about 495.9852105480.

Adding to 122013021 its reverse (120310221), we get a palindrome (242323242).

It can be divided in two parts, 1220 and 13021, that added together give a palindrome (14241).

The spelling of 122013021 in words is "one hundred twenty-two million, thirteen thousand, twenty-one".