213320021040 has 160 divisors (see below), whose sum is σ = 839736015360. Its totient is φ = 48758858496.

The previous prime is 213320021023. The next prime is 213320021071. The reversal of 213320021040 is 40120023312.

213320021040 is a `hidden beast` number, since 213 + 3 + 200 + 210 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 7039114 + ... + 7069353.

It is an arithmetic number, because the mean of its divisors is an integer number (5248350096).

Almost surely, 2^213320021040 is an apocalyptic number.

213320021040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213320021040 is an abundant number, since it is smaller than the sum of its proper divisors (626415994320).

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

213320021040 is a wasteful number, since it uses less digits than its factorization.

213320021040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14108496 (or 14108484 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 213320021040 its reverse (40120023312), we get a palindrome (253440044352).

The spelling of 213320021040 in words is "two hundred thirteen billion, three hundred twenty million, twenty-one thousand, forty".