12001222222311 has 8 divisors (see below), whose sum is σ = 18287576719744. Its totient is φ = 6857841269880.

The previous prime is 12001222222279. The next prime is 12001222222361. The reversal of 12001222222311 is 11322222210021.

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

It is not a de Polignac number, because 12001222222311 - 2⁵ = 12001222222279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 571486772491 = 12001222222311 / (1 + 2 + 0 + 0 + 1 + 2 + 2 + 2 + 2 + 2 + 2 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001222222361) 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, 285743386225 + ... + 285743386266.

It is an arithmetic number, because the mean of its divisors is an integer number (2285947089968).

Almost surely, 2^{12001222222311} is an apocalyptic number.

12001222222311 is a deficient number, since it is larger than the sum of its proper divisors (6286354497433).

12001222222311 is an equidigital number, since it uses as much as digits as its factorization.

12001222222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571486772501.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12001222222311 its reverse (11322222210021), we get a palindrome (23323444432332).

The spelling of 12001222222311 in words is "twelve trillion, one billion, two hundred twenty-two million, two hundred twenty-two thousand, three hundred eleven".