1331022220122 has 32 divisors (see below), whose sum is σ = 3104425008000. Its totient is φ = 380292062304.

The previous prime is 1331022220109. The next prime is 1331022220147. The reversal of 1331022220122 is 2210222201331.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323375547 + ... + 323379662.

It is an arithmetic number, because the mean of its divisors is an integer number (97013281500).

Almost surely, 2^{1331022220122} is an apocalyptic number.

1331022220122 is an abundant number, since it is smaller than the sum of its proper divisors (1773402787878).

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

1331022220122 is an equidigital number, since it uses as much as digits as its factorization.

1331022220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646755235 (or 646755221 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1331022220122 its reverse (2210222201331), we get a palindrome (3541244421453).

The spelling of 1331022220122 in words is "one trillion, three hundred thirty-one billion, twenty-two million, two hundred twenty thousand, one hundred twenty-two".