21100000102022 has 4 divisors (see below), whose sum is σ = 31650000153036. Its totient is φ = 10550000051010.

The previous prime is 21100000102003. The next prime is 21100000102031. The reversal of 21100000102022 is 22020100000112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21100000101994 and 21100000102012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275000025504 + ... + 5275000025507.

It is an arithmetic number, because the mean of its divisors is an integer number (7912500038259).

Almost surely, 2^{21100000102022} is an apocalyptic number.

21100000102022 is a deficient number, since it is larger than the sum of its proper divisors (10550000051014).

21100000102022 is a wasteful number, since it uses less digits than its factorization.

21100000102022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10550000051013.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21100000102022 its reverse (22020100000112), we get a palindrome (43120100102134).

The spelling of 21100000102022 in words is "twenty-one trillion, one hundred billion, one hundred two thousand, twenty-two".