1131211122222 has 32 divisors (see below), whose sum is σ = 2348903116800. Its totient is φ = 362797515360.

The previous prime is 1131211122149. The next prime is 1131211122263. The reversal of 1131211122222 is 2222211121311.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17545222 + ... + 17609577.

It is an arithmetic number, because the mean of its divisors is an integer number (73403222400).

Almost surely, 2^{1131211122222} is an apocalyptic number.

1131211122222 is an abundant number, since it is smaller than the sum of its proper divisors (1217691994578).

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

1131211122222 is a wasteful number, since it uses less digits than its factorization.

1131211122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35155008.

The product of its digits is 192, while the sum is 21.

Adding to 1131211122222 its reverse (2222211121311), we get a palindrome (3353422243533).

The spelling of 1131211122222 in words is "one trillion, one hundred thirty-one billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twenty-two".