211222110220120 has 64 divisors (see below), whose sum is σ = 500730867324000. Its totient is φ = 79967186869248.

The previous prime is 211222110220097. The next prime is 211222110220123. The reversal of 211222110220120 is 21022011222112.

211222110220120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211222110220120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222110220123) 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, 129179997 + ... + 130804876.

Almost surely, 2^{211222110220120} is an apocalyptic number.

211222110220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222110220120 is an abundant number, since it is smaller than the sum of its proper divisors (289508757103880).

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

211222110220120 is a wasteful number, since it uses less digits than its factorization.

211222110220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259985972 (or 259985968 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211222110220120 its reverse (21022011222112), we get a palindrome (232244121442232).

The spelling of 211222110220120 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty thousand, one hundred twenty".