12011219990 has 64 divisors (see below), whose sum is σ = 27017210880. Its totient is φ = 3735123840.

The previous prime is 12011219989. The next prime is 12011220017. The reversal of 12011219990 is 9991211021.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 12011219990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320264 + ... + 355796.

It is an arithmetic number, because the mean of its divisors is an integer number (422143920).

Almost surely, 2^12011219990 is an apocalyptic number.

12011219990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011219990 is an abundant number, since it is smaller than the sum of its proper divisors (15005990890).

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

12011219990 is a wasteful number, since it uses less digits than its factorization.

12011219990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35997.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 12011219990 in words is "twelve billion, eleven million, two hundred nineteen thousand, nine hundred ninety".