211100000022 has 48 divisors (see below), whose sum is σ = 472460592240. Its totient is φ = 68069077056.

The previous prime is 211100000017. The next prime is 211100000039. The reversal of 211100000022 is 220000001112.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 800872 + ... + 1031307.

It is an arithmetic number, because the mean of its divisors is an integer number (9842929005).

Almost surely, 2^211100000022 is an apocalyptic number.

211100000022 is an abundant number, since it is smaller than the sum of its proper divisors (261360592218).

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

211100000022 is a wasteful number, since it uses less digits than its factorization.

211100000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832397 (or 1832394 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 211100000022 its reverse (220000001112), we get a palindrome (431100001134).

The spelling of 211100000022 in words is "two hundred eleven billion, one hundred million, twenty-two", and thus it is an aban number.