211021202222222 has 16 divisors (see below), whose sum is σ = 362352546925152. Its totient is φ = 90287179459200.

The previous prime is 211021202222101. The next prime is 211021202222227. The reversal of 211021202222222 is 222222202120112.

It is a super-2 number, since 2×211021202222222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021202222227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12539877623 + ... + 12539894450.

It is an arithmetic number, because the mean of its divisors is an integer number (22647034182822).

Almost surely, 2^{211021202222222} is an apocalyptic number.

211021202222222 is a deficient number, since it is larger than the sum of its proper divisors (151331344702930).

211021202222222 is a wasteful number, since it uses less digits than its factorization.

211021202222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25079772683.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 211021202222222 its reverse (222222202120112), we get a palindrome (433243404342334).

The spelling of 211021202222222 in words is "two hundred eleven trillion, twenty-one billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty-two".