21101100022022 has 16 divisors (see below), whose sum is σ = 33515511959952. Its totient is φ = 9929336782080.

The previous prime is 21101100022019. The next prime is 21101100022099. The reversal of 21101100022022 is 22022000110112.

It is a junction number, because it is equal to n+sod(n) for n = 21101100021988 and 21101100022006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17941679 + ... + 19081562.

It is an arithmetic number, because the mean of its divisors is an integer number (2094719497497).

Almost surely, 2^{21101100022022} is an apocalyptic number.

21101100022022 is a deficient number, since it is larger than the sum of its proper divisors (12414411937930).

21101100022022 is a wasteful number, since it uses less digits than its factorization.

21101100022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37040023.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21101100022022 its reverse (22022000110112), we get a palindrome (43123100132134).

The spelling of 21101100022022 in words is "twenty-one trillion, one hundred one billion, one hundred million, twenty-two thousand, twenty-two".