212102101102 has 4 divisors (see below), whose sum is σ = 318153151656. Its totient is φ = 106051050550.

The previous prime is 212102101073. The next prime is 212102101163. The reversal of 212102101102 is 201101201212.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×212102101102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53025525274 + ... + 53025525277.

It is an arithmetic number, because the mean of its divisors is an integer number (79538287914).

Almost surely, 2^212102101102 is an apocalyptic number.

212102101102 is a deficient number, since it is larger than the sum of its proper divisors (106051050554).

212102101102 is a wasteful number, since it uses less digits than its factorization.

212102101102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106051050553.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212102101102 its reverse (201101201212), we get a palindrome (413203302314).

The spelling of 212102101102 in words is "two hundred twelve billion, one hundred two million, one hundred one thousand, one hundred two".