20022111221002 has 24 divisors (see below), whose sum is σ = 33816825237636. Its totient is φ = 8878985016000.

The previous prime is 20022111220997. The next prime is 20022111221009. The reversal of 20022111221002 is 20012211122002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19905972715321 + 116138505681 = 4461611^2 + 340791^2 .

It is not an unprimeable number, because it can be changed into a prime (20022111221009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1008965649 + ... + 1008985492.

Almost surely, 2^{20022111221002} is an apocalyptic number.

20022111221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20022111221002 is a deficient number, since it is larger than the sum of its proper divisors (13794714016634).

20022111221002 is a wasteful number, since it uses less digits than its factorization.

20022111221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017951206 (or 2017951195 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20022111221002 its reverse (20012211122002), we get a palindrome (40034322343004).

The spelling of 20022111221002 in words is "twenty trillion, twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, two".