1321022413100 has 36 divisors (see below), whose sum is σ = 3087127765344. Its totient is φ = 487762121280.

The previous prime is 1321022413097. The next prime is 1321022413157. The reversal of 1321022413100 is 13142201231.

It is a super-2 number, since 2×1321022413100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 508084244 + ... + 508086843.

Almost surely, 2^{1321022413100} is an apocalyptic number.

1321022413100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321022413100 is an abundant number, since it is smaller than the sum of its proper divisors (1766105352244).

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

1321022413100 is a wasteful number, since it uses less digits than its factorization.

1321022413100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016171114 (or 1016171107 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1321022413100 its reverse (13142201231), we get a palindrome (1334164614331).

The spelling of 1321022413100 in words is "one trillion, three hundred twenty-one billion, twenty-two million, four hundred thirteen thousand, one hundred".