211110022220 has 24 divisors (see below), whose sum is σ = 443520521808. Its totient is φ = 84407918400.

The previous prime is 211110022213. The next prime is 211110022223. The reversal of 211110022220 is 22220011112.

It is a junction number, because it is equal to n+sod(n) for n = 211110022195 and 211110022204.

It is not an unprimeable number, because it can be changed into a prime (211110022223) 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, 2207666 + ... + 2301305.

It is an arithmetic number, because the mean of its divisors is an integer number (18480021742).

Almost surely, 2^211110022220 is an apocalyptic number.

211110022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211110022220 is an abundant number, since it is smaller than the sum of its proper divisors (232410499588).

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

211110022220 is a wasteful number, since it uses less digits than its factorization.

211110022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511321 (or 4511319 counting only the distinct ones).

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

Adding to 211110022220 its reverse (22220011112), we get a palindrome (233330033332).

The spelling of 211110022220 in words is "two hundred eleven billion, one hundred ten million, twenty-two thousand, two hundred twenty".