213102321102 has 48 divisors (see below), whose sum is σ = 503727417648. Its totient is φ = 64572483840.

The previous prime is 213102321097. The next prime is 213102321109. The reversal of 213102321102 is 201123201312.

213102321102 is a `hidden beast` number, since 21 + 310 + 2 + 321 + 10 + 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 (213102321109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5610808 + ... + 5648660.

It is an arithmetic number, because the mean of its divisors is an integer number (10494321201).

Almost surely, 2^213102321102 is an apocalyptic number.

213102321102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213102321102 is an abundant number, since it is smaller than the sum of its proper divisors (290625096546).

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

213102321102 is a wasteful number, since it uses less digits than its factorization.

213102321102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66305 (or 66302 counting only the distinct ones).

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

Adding to 213102321102 its reverse (201123201312), we get a palindrome (414225522414).

The spelling of 213102321102 in words is "two hundred thirteen billion, one hundred two million, three hundred twenty-one thousand, one hundred two".