22221003021021 has 48 divisors (see below), whose sum is σ = 36832072712448. Its totient is φ = 12645968832000.

The previous prime is 22221003021017. The next prime is 22221003021053. The reversal of 22221003021021 is 12012030012222.

22221003021021 is a `hidden beast` number, since 222 + 210 + 0 + 3 + 0 + 210 + 21 = 666.

It is not a de Polignac number, because 22221003021021 - 2² = 22221003021017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22221003020985 and 22221003021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221003021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15243975 + ... + 16637931.

It is an arithmetic number, because the mean of its divisors is an integer number (767334848176).

Almost surely, 2^{22221003021021} is an apocalyptic number.

22221003021021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22221003021021 is a deficient number, since it is larger than the sum of its proper divisors (14611069691427).

22221003021021 is a wasteful number, since it uses less digits than its factorization.

22221003021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395002 (or 1394999 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22221003021021 its reverse (12012030012222), we get a palindrome (34233033033243).

The spelling of 22221003021021 in words is "twenty-two trillion, two hundred twenty-one billion, three million, twenty-one thousand, twenty-one".