212101200120120 has 64 divisors (see below), whose sum is σ = 637939342404000. Its totient is φ = 56414920739328.

The previous prime is 212101200120101. The next prime is 212101200120127. The reversal of 212101200120120 is 21021002101212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212101200120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101200120127) 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, 2271817075 + ... + 2271910434.

Almost surely, 2^{212101200120120} is an apocalyptic number.

212101200120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101200120120 is an abundant number, since it is smaller than the sum of its proper divisors (425838142283880).

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

212101200120120 is a wasteful number, since it uses less digits than its factorization.

212101200120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543727912 (or 4543727908 counting only the distinct ones).

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

Adding to 212101200120120 its reverse (21021002101212), we get a palindrome (233122202221332).

The spelling of 212101200120120 in words is "two hundred twelve trillion, one hundred one billion, two hundred million, one hundred twenty thousand, one hundred twenty".