212102010020100 has 144 divisors (see below), whose sum is σ = 630380925774656. Its totient is φ = 55021996224000.

The previous prime is 212102010020083. The next prime is 212102010020141. The reversal of 212102010020100 is 1020010201212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60237195 + ... + 63661005.

Almost surely, 2^{212102010020100} is an apocalyptic number.

212102010020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212102010020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315190462887328).

212102010020100 is an abundant number, since it is smaller than the sum of its proper divisors (418278915754556).

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

212102010020100 is a wasteful number, since it uses less digits than its factorization.

212102010020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429446 (or 3429439 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 212102010020100 its reverse (1020010201212), we get a palindrome (213122020221312).

The spelling of 212102010020100 in words is "two hundred twelve trillion, one hundred two billion, ten million, twenty thousand, one hundred".