213120213102 has 48 divisors (see below), whose sum is σ = 485422544880. Its totient is φ = 70066907712.

The previous prime is 213120213079. The next prime is 213120213107. The reversal of 213120213102 is 201312021312.

213120213102 is a `hidden beast` number, since 21 + 312 + 0 + 21 + 310 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120213107) 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, 2968077 + ... + 3039032.

It is an arithmetic number, because the mean of its divisors is an integer number (10112969685).

Almost surely, 2^213120213102 is an apocalyptic number.

213120213102 is an abundant number, since it is smaller than the sum of its proper divisors (272302331778).

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

213120213102 is an equidigital number, since it uses as much as digits as its factorization.

213120213102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007199 (or 6007187 counting only the distinct ones).

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

Adding to 213120213102 its reverse (201312021312), we get a palindrome (414432234414).

It can be divided in two parts, 21312021310 and 2, that added together give a palindrome (21312021312).

The spelling of 213120213102 in words is "two hundred thirteen billion, one hundred twenty million, two hundred thirteen thousand, one hundred two".