1331409994422 has 48 divisors (see below), whose sum is σ = 2830578117120. Its totient is φ = 417415545472.

The previous prime is 1331409994373. The next prime is 1331409994433. The reversal of 1331409994422 is 2244999041331.

It is a happy number.

It is a super-2 number, since 2×1331409994422² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2320279 + ... + 2836637.

It is an arithmetic number, because the mean of its divisors is an integer number (58970377440).

Almost surely, 2^{1331409994422} is an apocalyptic number.

1331409994422 is an abundant number, since it is smaller than the sum of its proper divisors (1499168122698).

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

1331409994422 is a wasteful number, since it uses less digits than its factorization.

1331409994422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517885 (or 517868 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 1331409994422 in words is "one trillion, three hundred thirty-one billion, four hundred nine million, nine hundred ninety-four thousand, four hundred twenty-two".