211122220230 has 64 divisors (see below), whose sum is σ = 565348377600. Its totient is φ = 56063679840.

The previous prime is 211122220223. The next prime is 211122220259. The reversal of 211122220230 is 32022221112.

211122220230 is a `hidden beast` number, since 211 + 1 + 2 + 2 + 220 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 1571316 + ... + 1700375.

It is an arithmetic number, because the mean of its divisors is an integer number (8833568400).

Almost surely, 2^211122220230 is an apocalyptic number.

211122220230 is an abundant number, since it is smaller than the sum of its proper divisors (354226157370).

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

211122220230 is a wasteful number, since it uses less digits than its factorization.

211122220230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271946 (or 3271940 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 211122220230 its reverse (32022221112), we get a palindrome (243144441342).

The spelling of 211122220230 in words is "two hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand, two hundred thirty".