213111231220002 has 64 divisors (see below), whose sum is σ = 441610712895744. Its totient is φ = 68508649820160.

The previous prime is 213111231219989. The next prime is 213111231220007. The reversal of 213111231220002 is 200022132111312.

It is not an unprimeable number, because it can be changed into a prime (213111231220007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4945102 + ... + 21229142.

It is an arithmetic number, because the mean of its divisors is an integer number (6900167388996).

Almost surely, 2^{213111231220002} is an apocalyptic number.

213111231220002 is an abundant number, since it is smaller than the sum of its proper divisors (228499481675742).

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

213111231220002 is a wasteful number, since it uses less digits than its factorization.

213111231220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16284603.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 213111231220002 its reverse (200022132111312), we get a palindrome (413133363331314).

The spelling of 213111231220002 in words is "two hundred thirteen trillion, one hundred eleven billion, two hundred thirty-one million, two hundred twenty thousand, two".