211110200020 has 48 divisors (see below), whose sum is σ = 472560253200. Its totient is φ = 78943361024.

The previous prime is 211110199999. The next prime is 211110200033. The reversal of 211110200020 is 20002011112.

It can be written as a sum of positive squares in 8 ways, for example, as 2769074884 + 208341125136 = 52622^2 + 456444^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2032939 + ... + 2134258.

It is an arithmetic number, because the mean of its divisors is an integer number (9845005275).

Almost surely, 2^211110200020 is an apocalyptic number.

211110200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211110200020 is an abundant number, since it is smaller than the sum of its proper divisors (261450053180).

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

211110200020 is a wasteful number, since it uses less digits than its factorization.

211110200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167372 (or 4167370 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211110200020 its reverse (20002011112), we get a palindrome (231112211132).

The spelling of 211110200020 in words is "two hundred eleven billion, one hundred ten million, two hundred thousand, twenty".