212100100102 has 16 divisors (see below), whose sum is σ = 350257050000. Its totient is φ = 95524647840.

The previous prime is 212100100099. The next prime is 212100100111. The reversal of 212100100102 is 201001001212.

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, 44221977 + ... + 44226772.

It is an arithmetic number, because the mean of its divisors is an integer number (21891065625).

Almost surely, 2^212100100102 is an apocalyptic number.

212100100102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212100100102 is a deficient number, since it is larger than the sum of its proper divisors (138156949898).

212100100102 is a wasteful number, since it uses less digits than its factorization.

212100100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88448871.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 212100100102 its reverse (201001001212), we get a palindrome (413101101314).

The spelling of 212100100102 in words is "two hundred twelve billion, one hundred million, one hundred thousand, one hundred two".