211010022256 has 80 divisors (see below), whose sum is σ = 462424152960. Its totient is φ = 92396245760.

The previous prime is 211010022221. The next prime is 211010022257. The reversal of 211010022256 is 652220010112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211010022257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2214411 + ... + 2307733.

It is an arithmetic number, because the mean of its divisors is an integer number (5780301912).

Almost surely, 2^211010022256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211010022256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231212076480).

211010022256 is an abundant number, since it is smaller than the sum of its proper divisors (251414130704).

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

211010022256 is a wasteful number, since it uses less digits than its factorization.

211010022256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93814 (or 93808 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 211010022256 its reverse (652220010112), we get a palindrome (863230032368).

The spelling of 211010022256 in words is "two hundred eleven billion, ten million, twenty-two thousand, two hundred fifty-six".