2111231332100 has 144 divisors (see below), whose sum is σ = 5103873331200. Its totient is φ = 751544976000.

The previous prime is 2111231332087. The next prime is 2111231332123. The reversal of 2111231332100 is 12331321112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15443045 + ... + 15579155.

It is an arithmetic number, because the mean of its divisors is an integer number (35443564800).

Almost surely, 2^{2111231332100} is an apocalyptic number.

2111231332100 is a gapful number since it is divisible by the number (20) 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 2111231332100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2551936665600).

2111231332100 is an abundant number, since it is smaller than the sum of its proper divisors (2992641999100).

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

2111231332100 is a wasteful number, since it uses less digits than its factorization.

2111231332100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136434 (or 136427 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2111231332100 its reverse (12331321112), we get a palindrome (2123562653212).

The spelling of 2111231332100 in words is "two trillion, one hundred eleven billion, two hundred thirty-one million, three hundred thirty-two thousand, one hundred".