212211100100120 has 32 divisors (see below), whose sum is σ = 520881791155920. Its totient is φ = 77167672763520.

The previous prime is 212211100100053. The next prime is 212211100100143. The reversal of 212211100100120 is 21001001112212.

It is a junction number, because it is equal to n+sod(n) for n = 212211100100095 and 212211100100104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241148976947 + ... + 241148977826.

Almost surely, 2^{212211100100120} is an apocalyptic number.

212211100100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212211100100120 is an abundant number, since it is smaller than the sum of its proper divisors (308670691055800).

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

212211100100120 is a wasteful number, since it uses less digits than its factorization.

212211100100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482297954795 (or 482297954791 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212211100100120 its reverse (21001001112212), we get a palindrome (233212101212332).

The spelling of 212211100100120 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred million, one hundred thousand, one hundred twenty".