213344021000 has 128 divisors (see below), whose sum is σ = 568288431360. Its totient is φ = 74206528000.

The previous prime is 213344020999. The next prime is 213344021021. The reversal of 213344021000 is 120443312.

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 31 ways as a sum of consecutive naturals, for example, 168629 + ... + 674628.

It is an arithmetic number, because the mean of its divisors is an integer number (4439753370).

Almost surely, 2^213344021000 is an apocalyptic number.

213344021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213344021000 is an abundant number, since it is smaller than the sum of its proper divisors (354944410360).

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

213344021000 is a wasteful number, since it uses less digits than its factorization.

213344021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843312 (or 843298 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 213344021000 its reverse (120443312), we get a palindrome (213464464312).

The spelling of 213344021000 in words is "two hundred thirteen billion, three hundred forty-four million, twenty-one thousand".