21100100010022 has 16 divisors (see below), whose sum is σ = 35718037635600. Its totient is φ = 9260231979040.

The previous prime is 21100100009981. The next prime is 21100100010029. The reversal of 21100100010022 is 22001000100112.

It is a junction number, because it is equal to n+sod(n) for n = 21100100009990 and 21100100010008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100100010029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16536127897 + ... + 16536129172.

It is an arithmetic number, because the mean of its divisors is an integer number (2232377352225).

Almost surely, 2^{21100100010022} is an apocalyptic number.

21100100010022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21100100010022 is a deficient number, since it is larger than the sum of its proper divisors (14617937625578).

21100100010022 is a wasteful number, since it uses less digits than its factorization.

21100100010022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33072257111.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21100100010022 its reverse (22001000100112), we get a palindrome (43101100110134).

The spelling of 21100100010022 in words is "twenty-one trillion, one hundred billion, one hundred million, ten thousand, twenty-two".