2311311121222 has 4 divisors (see below), whose sum is σ = 3466966681836. Its totient is φ = 1155655560610.

The previous prime is 2311311121211. The next prime is 2311311121237. The reversal of 2311311121222 is 2221211131132.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2311311121193 and 2311311121202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577827780304 + ... + 577827780307.

It is an arithmetic number, because the mean of its divisors is an integer number (866741670459).

Almost surely, 2^{2311311121222} is an apocalyptic number.

2311311121222 is a deficient number, since it is larger than the sum of its proper divisors (1155655560614).

2311311121222 is a wasteful number, since it uses less digits than its factorization.

2311311121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155655560613.

The product of its digits is 288, while the sum is 22.

Adding to 2311311121222 its reverse (2221211131132), we get a palindrome (4532522252354).

The spelling of 2311311121222 in words is "two trillion, three hundred eleven billion, three hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".