212100102210102 has 32 divisors (see below), whose sum is σ = 439295028213888. Its totient is φ = 68223849064896.

The previous prime is 212100102210091. The next prime is 212100102210103. The reversal of 212100102210102 is 201012201001212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100102210103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4952348583 + ... + 4952391410.

It is an arithmetic number, because the mean of its divisors is an integer number (13727969631684).

Almost surely, 2^{212100102210102} is an apocalyptic number.

212100102210102 is an abundant number, since it is smaller than the sum of its proper divisors (227194926003786).

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

212100102210102 is a wasteful number, since it uses less digits than its factorization.

212100102210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904740124.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212100102210102 its reverse (201012201001212), we get a palindrome (413112303211314).

The spelling of 212100102210102 in words is "two hundred twelve trillion, one hundred billion, one hundred two million, two hundred ten thousand, one hundred two".