211000222211220 has 96 divisors (see below), whose sum is σ = 706940915466240. Its totient is φ = 51938516234880.

The previous prime is 211000222211213. The next prime is 211000222211231. The reversal of 211000222211220 is 22112222000112.

It is a happy number.

211000222211220 is a `hidden beast` number, since 2 + 1 + 10 + 0 + 0 + 222 + 211 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 211000222211193 and 211000222211202.

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, 15028498836 + ... + 15028512875.

It is an arithmetic number, because the mean of its divisors is an integer number (7363967869440).

Almost surely, 2^{211000222211220} is an apocalyptic number.

211000222211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211000222211220 is an abundant number, since it is smaller than the sum of its proper divisors (495940693255020).

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

211000222211220 is a wasteful number, since it uses less digits than its factorization.

211000222211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30057011742 (or 30057011734 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211000222211220 its reverse (22112222000112), we get a palindrome (233112444211332).

The spelling of 211000222211220 in words is "two hundred eleven trillion, two hundred twenty-two million, two hundred eleven thousand, two hundred twenty".