212100120021102 has 32 divisors (see below), whose sum is σ = 435715405673472. Its totient is φ = 68781286913184.

The previous prime is 212100120021077. The next prime is 212100120021137. The reversal of 212100120021102 is 201120021001212.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53219718 + ... + 57066089.

It is an arithmetic number, because the mean of its divisors is an integer number (13616106427296).

Almost surely, 2^{212100120021102} is an apocalyptic number.

212100120021102 is an abundant number, since it is smaller than the sum of its proper divisors (223615285652370).

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

212100120021102 is a wasteful number, since it uses less digits than its factorization.

212100120021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110294512.

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

Adding to 212100120021102 its reverse (201120021001212), we get a palindrome (413220141022314).

The spelling of 212100120021102 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty million, twenty-one thousand, one hundred two".