212102212100 has 36 divisors (see below), whose sum is σ = 466744376448. Its totient is φ = 83645940000.

The previous prime is 212102212067. The next prime is 212102212109. The reversal of 212102212100 is 1212201212.

It is not an unprimeable number, because it can be changed into a prime (212102212109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14929676 + ... + 14943875.

It is an arithmetic number, because the mean of its divisors is an integer number (12965121568).

Almost surely, 2^212102212100 is an apocalyptic number.

212102212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212102212100 is an abundant number, since it is smaller than the sum of its proper divisors (254642164348).

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

212102212100 is a wasteful number, since it uses less digits than its factorization.

212102212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29873636 (or 29873629 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212102212100 its reverse (1212201212), we get a palindrome (213314413312).

The spelling of 212102212100 in words is "two hundred twelve billion, one hundred two million, two hundred twelve thousand, one hundred".