22201201221020 has 24 divisors (see below), whose sum is σ = 47706767276784. Its totient is φ = 8673957686016.

The previous prime is 22201201221007. The next prime is 22201201221037. The reversal of 22201201221020 is 2012210210222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22201201221020.

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 in 7 ways as a sum of consecutive naturals, for example, 12907674269 + ... + 12907675988.

It is an arithmetic number, because the mean of its divisors is an integer number (1987781969866).

Almost surely, 2^{22201201221020} is an apocalyptic number.

22201201221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201201221020 is an abundant number, since it is smaller than the sum of its proper divisors (25505566055764).

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

22201201221020 is a wasteful number, since it uses less digits than its factorization.

22201201221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25815350309 (or 25815350307 counting only the distinct ones).

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

Adding to 22201201221020 its reverse (2012210210222), we get a palindrome (24213411431242).

The spelling of 22201201221020 in words is "twenty-two trillion, two hundred one billion, two hundred one million, two hundred twenty-one thousand, twenty".