11922621 has 12 divisors (see below), whose sum is σ = 16343712. Its totient is φ = 7730928.

The previous prime is 11922619. The next prime is 11922629. The reversal of 11922621 is 12622911.

It is not a de Polignac number, because 11922621 - 2¹ = 11922619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11922591 and 11922600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11922629) 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, 2656 + ... + 5558.

It is an arithmetic number, because the mean of its divisors is an integer number (1361976).

Almost surely, 2^11922621 is an apocalyptic number.

It is an amenable number.

11922621 is a deficient number, since it is larger than the sum of its proper divisors (4421091).

11922621 is an equidigital number, since it uses as much as digits as its factorization.

11922621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980 (or 2943 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 11922621 is about 3452.9148555966. The cubic root of 11922621 is about 228.4496934168.

The spelling of 11922621 in words is "eleven million, nine hundred twenty-two thousand, six hundred twenty-one".