213111220102 has 16 divisors (see below), whose sum is σ = 354638088000. Its totient is φ = 95226892840.

The previous prime is 213111220001. The next prime is 213111220123. The reversal of 213111220102 is 201022111312.

It is a super-3 number, since 3×213111220102³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82090852 + ... + 82093447.

It is an arithmetic number, because the mean of its divisors is an integer number (22164880500).

Almost surely, 2^213111220102 is an apocalyptic number.

213111220102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213111220102 is a deficient number, since it is larger than the sum of its proper divisors (141526867898).

213111220102 is a wasteful number, since it uses less digits than its factorization.

213111220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164184371.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 213111220102 its reverse (201022111312), we get a palindrome (414133331414).

The spelling of 213111220102 in words is "two hundred thirteen billion, one hundred eleven million, two hundred twenty thousand, one hundred two".