221022022021100 has 72 divisors (see below), whose sum is σ = 480409530967968. Its totient is φ = 88262883878400.

The previous prime is 221022022021093. The next prime is 221022022021127. The reversal of 221022022021100 is 1120220220122.

It is a happy number.

It is a super-2 number, since 2×221022022021100² (a number of 29 digits) contains 22 as substring.

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 in 23 ways as a sum of consecutive naturals, for example, 1030505072 + ... + 1030719528.

Almost surely, 2^{221022022021100} is an apocalyptic number.

221022022021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221022022021100 is an abundant number, since it is smaller than the sum of its proper divisors (259387508946868).

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

221022022021100 is a wasteful number, since it uses less digits than its factorization.

221022022021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231435 (or 231428 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221022022021100 its reverse (1120220220122), we get a palindrome (222142242241222).

The spelling of 221022022021100 in words is "two hundred twenty-one trillion, twenty-two billion, twenty-two million, twenty-one thousand, one hundred".