1001322012400 has 60 divisors (see below), whose sum is σ = 2405849077312. Its totient is φ = 400500011520.

The previous prime is 1001322012391. The next prime is 1001322012419. The reversal of 1001322012400 is 42102231001.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 5994817 + ... + 6159583.

Almost surely, 2^{1001322012400} is an apocalyptic number.

1001322012400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001322012400 is an abundant number, since it is smaller than the sum of its proper divisors (1404527064912).

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

1001322012400 is a wasteful number, since it uses less digits than its factorization.

1001322012400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179978 (or 179967 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1001322012400 its reverse (42102231001), we get a palindrome (1043424243401).

The spelling of 1001322012400 in words is "one trillion, one billion, three hundred twenty-two million, twelve thousand, four hundred".