211120101220 has 96 divisors (see below), whose sum is σ = 508386106368. Its totient is φ = 72141898752.

The previous prime is 211120101167. The next prime is 211120101289. The reversal of 211120101220 is 22101021112.

It is a self number, because there is not a number n which added to its sum of digits gives 211120101220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80181024 + ... + 80183656.

It is an arithmetic number, because the mean of its divisors is an integer number (5295688608).

Almost surely, 2^211120101220 is an apocalyptic number.

211120101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211120101220 is an abundant number, since it is smaller than the sum of its proper divisors (297266005148).

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

211120101220 is a wasteful number, since it uses less digits than its factorization.

211120101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349 (or 4347 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211120101220 its reverse (22101021112), we get a palindrome (233221122332).

The spelling of 211120101220 in words is "two hundred eleven billion, one hundred twenty million, one hundred one thousand, two hundred twenty".