22221020221002 has 32 divisors (see below), whose sum is σ = 50056483916160. Its totient is φ = 7305540893280.

The previous prime is 22221020220989. The next prime is 22221020221003. The reversal of 22221020221002 is 20012202012222.

22221020221002 is a `hidden beast` number, since 222 + 210 + 20 + 2 + 210 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22221020221003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2818491774 + ... + 2818499657.

It is an arithmetic number, because the mean of its divisors is an integer number (1564265122380).

Almost surely, 2^{22221020221002} is an apocalyptic number.

22221020221002 is an abundant number, since it is smaller than the sum of its proper divisors (27835463695158).

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

22221020221002 is a wasteful number, since it uses less digits than its factorization.

22221020221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5636991515 (or 5636991509 counting only the distinct ones).

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

Adding to 22221020221002 its reverse (20012202012222), we get a palindrome (42233222233224).

The spelling of 22221020221002 in words is "twenty-two trillion, two hundred twenty-one billion, twenty million, two hundred twenty-one thousand, two".