1321199922810 has 64 divisors (see below), whose sum is σ = 3200974848000. Its totient is φ = 348977036352.

The previous prime is 1321199922803. The next prime is 1321199922827. The reversal of 1321199922810 is 182299911231.

It is a super-2 number, since 2×1321199922810² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321199922810.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25779591 + ... + 25830789.

It is an arithmetic number, because the mean of its divisors is an integer number (50015232000).

Almost surely, 2^{1321199922810} is an apocalyptic number.

1321199922810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321199922810 is an abundant number, since it is smaller than the sum of its proper divisors (1879774925190).

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

1321199922810 is a wasteful number, since it uses less digits than its factorization.

1321199922810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59355.

The product of its (nonzero) digits is 139968, while the sum is 48.

The spelling of 1321199922810 in words is "one trillion, three hundred twenty-one billion, one hundred ninety-nine million, nine hundred twenty-two thousand, eight hundred ten".