122002013 has 28 divisors (see below), whose sum is σ = 153178812. Its totient is φ = 96808320.

The previous prime is 122002009. The next prime is 122002039. The reversal of 122002013 is 310200221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42471289 + 79530724 = 6517^2 + 8918^2 .

It is not a de Polignac number, because 122002013 - 2² = 122002009 is a prime.

It is a Duffinian number.

122002013 is a modest number, since divided by 2013 gives 122 as remainder.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122001985 and 122002003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002093) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2000003 + ... + 2000063.

Almost surely, 2^122002013 is an apocalyptic number.

It is an amenable number.

122002013 is a deficient number, since it is larger than the sum of its proper divisors (31176799).

122002013 is an frugal number, since it uses more digits than its factorization.

122002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 122002013 is about 11045.4521410398. The cubic root of 122002013 is about 495.9702941908.

Adding to 122002013 its reverse (310200221), we get a palindrome (432202234).

The spelling of 122002013 in words is "one hundred twenty-two million, two thousand, thirteen".