11922001920 has 312 divisors, whose sum is σ = 41952598272. Its totient is φ = 3130982400.

The previous prime is 11922001913. The next prime is 11922001939. The reversal of 11922001920 is 2910022911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13086265 + ... + 13087175.

It is an arithmetic number, because the mean of its divisors is an integer number (134463456).

Almost surely, 2^11922001920 is an apocalyptic number.

11922001920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11922001920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20976299136).

11922001920 is an abundant number, since it is smaller than the sum of its proper divisors (30030596352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11922001920 is an equidigital number, since it uses as much as digits as its factorization.

11922001920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 11922001920 in words is "eleven billion, nine hundred twenty-two million, one thousand, nine hundred twenty".