2211231131999 has 4 divisors (see below), whose sum is σ = 2213741043360. Its totient is φ = 2208721220640.

The previous prime is 2211231131981. The next prime is 2211231132007. The reversal of 2211231131999 is 9991311321122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2211231131999 - 2⁸ = 2211231131743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211231134999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254954359 + ... + 1254956120.

It is an arithmetic number, because the mean of its divisors is an integer number (553435260840).

Almost surely, 2^{2211231131999} is an apocalyptic number.

2211231131999 is a deficient number, since it is larger than the sum of its proper divisors (2509911361).

2211231131999 is an equidigital number, since it uses as much as digits as its factorization.

2211231131999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509911360.

The product of its digits is 52488, while the sum is 44.

The spelling of 2211231131999 in words is "two trillion, two hundred eleven billion, two hundred thirty-one million, one hundred thirty-one thousand, nine hundred ninety-nine".