221122122211022 has 4 divisors (see below), whose sum is σ = 331683183316536. Its totient is φ = 110561061105510.

The previous prime is 221122122210887. The next prime is 221122122211031. The reversal of 221122122211022 is 220112221221122.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×221122122211022² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 55280530552754 + ... + 55280530552757.

It is an arithmetic number, because the mean of its divisors is an integer number (82920795829134).

Almost surely, 2^{221122122211022} is an apocalyptic number.

221122122211022 is a deficient number, since it is larger than the sum of its proper divisors (110561061105514).

221122122211022 is a wasteful number, since it uses less digits than its factorization.

221122122211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110561061105513.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221122122211022 its reverse (220112221221122), we get a palindrome (441234343432144).

The spelling of 221122122211022 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, twenty-two".