22201222002021 has 48 divisors (see below), whose sum is σ = 35441800093440. Its totient is φ = 13320496949760.

The previous prime is 22201222001897. The next prime is 22201222002059. The reversal of 22201222002021 is 12020022210222.

It is not a de Polignac number, because 22201222002021 - 2¹⁸ = 22201221739877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22201222001985 and 22201222002003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201222802021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10729131 + ... + 12629991.

It is an arithmetic number, because the mean of its divisors is an integer number (738370835280).

Almost surely, 2^{22201222002021} is an apocalyptic number.

It is an amenable number.

22201222002021 is a deficient number, since it is larger than the sum of its proper divisors (13240578091419).

22201222002021 is a wasteful number, since it uses less digits than its factorization.

22201222002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904226 (or 1904223 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22201222002021 its reverse (12020022210222), we get a palindrome (34221244212243).

The spelling of 22201222002021 in words is "twenty-two trillion, two hundred one billion, two hundred twenty-two million, two thousand, twenty-one".