212102210202100 has 72 divisors (see below), whose sum is σ = 462287485214240. Its totient is φ = 84467510536320.

The previous prime is 212102210202073. The next prime is 212102210202107. The reversal of 212102210202100 is 1202012201212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102210202107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 746100187 + ... + 746384413.

Almost surely, 2^{212102210202100} is an apocalyptic number.

212102210202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102210202100 is an abundant number, since it is smaller than the sum of its proper divisors (250185275012140).

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

212102210202100 is a wasteful number, since it uses less digits than its factorization.

212102210202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317057 (or 317050 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212102210202100 its reverse (1202012201212), we get a palindrome (213304222403312).

The spelling of 212102210202100 in words is "two hundred twelve trillion, one hundred two billion, two hundred ten million, two hundred two thousand, one hundred".