11922861 has 8 divisors (see below), whose sum is σ = 16733920. Its totient is φ = 7530192.

The previous prime is 11922853. The next prime is 11922863. The reversal of 11922861 is 16822911.

It is a happy number.

11922861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11922861 - 2³ = 11922853 is a prime.

It is a super-2 number, since 2×11922861² = 284309228850642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11922863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104530 + ... + 104643.

It is an arithmetic number, because the mean of its divisors is an integer number (2091740).

Almost surely, 2^11922861 is an apocalyptic number.

It is an amenable number.

11922861 is a deficient number, since it is larger than the sum of its proper divisors (4811059).

11922861 is a wasteful number, since it uses less digits than its factorization.

11922861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209195.

The product of its digits is 1728, while the sum is 30.

The square root of 11922861 is about 3452.9496086679. The cubic root of 11922861 is about 228.4512262888.

The spelling of 11922861 in words is "eleven million, nine hundred twenty-two thousand, eight hundred sixty-one".