21100002022 has 12 divisors (see below), whose sum is σ = 34788846708. Its totient is φ = 9590909900.

The previous prime is 21100001929. The next prime is 21100002041. The reversal of 21100002022 is 22020000112.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 43594804 + ... + 43595287.

It is an arithmetic number, because the mean of its divisors is an integer number (2899070559).

Almost surely, 2^21100002022 is an apocalyptic number.

21100002022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21100002022 is a deficient number, since it is larger than the sum of its proper divisors (13688844686).

21100002022 is a wasteful number, since it uses less digits than its factorization.

21100002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87190115 (or 87190104 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21100002022 its reverse (22020000112), we get a palindrome (43120002134).

The spelling of 21100002022 in words is "twenty-one billion, one hundred million, two thousand, twenty-two".