11520621 has 12 divisors (see below), whose sum is σ = 19018272. Its totient is φ = 6583176.

The previous prime is 11520617. The next prime is 11520629. The reversal of 11520621 is 12602511.

It is not a de Polignac number, because 11520621 - 2² = 11520617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11520594 and 11520603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91371 + ... + 91496.

It is an arithmetic number, because the mean of its divisors is an integer number (1584856).

Almost surely, 2^11520621 is an apocalyptic number.

It is an amenable number.

11520621 is a deficient number, since it is larger than the sum of its proper divisors (7497651).

11520621 is a wasteful number, since it uses less digits than its factorization.

11520621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182880 (or 182877 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 11520621 is about 3394.2040304024. The cubic root of 11520621 is about 225.8527050764.

It can be divided in two parts, 115 and 20621, that added together give a 4-th power (20736 = 12⁴).

The spelling of 11520621 in words is "eleven million, five hundred twenty thousand, six hundred twenty-one".