211310222121222 has 48 divisors (see below), whose sum is σ = 491620993051392. Its totient is φ = 60374190436560.

The previous prime is 211310222121191. The next prime is 211310222121223. The reversal of 211310222121222 is 222121222013112.

It is a junction number, because it is equal to n+sod(n) for n = 211310222121192 and 211310222121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211310222121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154454223 + ... + 155816325.

It is an arithmetic number, because the mean of its divisors is an integer number (10242104021904).

Almost surely, 2^{211310222121222} is an apocalyptic number.

211310222121222 is an abundant number, since it is smaller than the sum of its proper divisors (280310770930170).

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

211310222121222 is a wasteful number, since it uses less digits than its factorization.

211310222121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889793 (or 1889786 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 211310222121222 its reverse (222121222013112), we get a palindrome (433431444134334).

The spelling of 211310222121222 in words is "two hundred eleven trillion, three hundred ten billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".