201122122222 has 16 divisors (see below), whose sum is σ = 344807770752. Its totient is φ = 86188447800.

The previous prime is 201122122213. The next prime is 201122122247. The reversal of 201122122222 is 222221221102.

It is a super-2 number, since 2×201122122222² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201122122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374904 + ... + 736747.

It is an arithmetic number, because the mean of its divisors is an integer number (21550485672).

Almost surely, 2^201122122222 is an apocalyptic number.

201122122222 is a deficient number, since it is larger than the sum of its proper divisors (143685648530).

201122122222 is a wasteful number, since it uses less digits than its factorization.

201122122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124583.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 201122122222 its reverse (222221221102), we get a palindrome (423343343324).

The spelling of 201122122222 in words is "two hundred one billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".