211212200120 has 32 divisors (see below), whose sum is σ = 481920801120. Its totient is φ = 83294951040.

The previous prime is 211212200113. The next prime is 211212200123. The reversal of 211212200120 is 21002212112.

It is a super-2 number, since 2×211212200120² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211212200095 and 211212200104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212200123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37182407 + ... + 37188086.

It is an arithmetic number, because the mean of its divisors is an integer number (15060025035).

Almost surely, 2^211212200120 is an apocalyptic number.

211212200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211212200120 is an abundant number, since it is smaller than the sum of its proper divisors (270708601000).

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

211212200120 is a wasteful number, since it uses less digits than its factorization.

211212200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74370575 (or 74370571 counting only the distinct ones).

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

Adding to 211212200120 its reverse (21002212112), we get a palindrome (232214412232).

The spelling of 211212200120 in words is "two hundred eleven billion, two hundred twelve million, two hundred thousand, one hundred twenty".