213113221002 has 48 divisors (see below), whose sum is σ = 510816870720. Its totient is φ = 63670185600.

The previous prime is 213113221001. The next prime is 213113221019. The reversal of 213113221002 is 200122311312.

213113221002 is a `hidden beast` number, since 21 + 311 + 322 + 10 + 0 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (213113221001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7565727 + ... + 7593842.

It is an arithmetic number, because the mean of its divisors is an integer number (10642018140).

Almost surely, 2^213113221002 is an apocalyptic number.

213113221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213113221002 is an abundant number, since it is smaller than the sum of its proper divisors (297703649718).

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

213113221002 is a wasteful number, since it uses less digits than its factorization.

213113221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15159659 (or 15159656 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 213113221002 its reverse (200122311312), we get a palindrome (413235532314).

The spelling of 213113221002 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred twenty-one thousand, two".