1401324021200 has 60 divisors (see below), whose sum is σ = 3367522515360. Its totient is φ = 560389495680.

The previous prime is 1401324021151. The next prime is 1401324021203. The reversal of 1401324021200 is 21204231041.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401324021203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1171757 + ... + 2043443.

It is an arithmetic number, because the mean of its divisors is an integer number (56125375256).

Almost surely, 2^{1401324021200} is an apocalyptic number.

1401324021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401324021200 is an abundant number, since it is smaller than the sum of its proper divisors (1966198494160).

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

1401324021200 is a wasteful number, since it uses less digits than its factorization.

1401324021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875724 (or 875713 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1401324021200 its reverse (21204231041), we get a palindrome (1422528252241).

The spelling of 1401324021200 in words is "one trillion, four hundred one billion, three hundred twenty-four million, twenty-one thousand, two hundred".