21101100022 has 8 divisors (see below), whose sum is σ = 31689378000. Its totient is φ = 10537974024.

The previous prime is 21101099989. The next prime is 21101100061. The reversal of 21101100022 is 22000110112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21101099981 and 21101100008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6285897 + ... + 6289252.

It is an arithmetic number, because the mean of its divisors is an integer number (3961172250).

Almost surely, 2^21101100022 is an apocalyptic number.

21101100022 is a deficient number, since it is larger than the sum of its proper divisors (10588277978).

21101100022 is a wasteful number, since it uses less digits than its factorization.

21101100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12575990.

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

Adding to 21101100022 its reverse (22000110112), we get a palindrome (43101210134).

The spelling of 21101100022 in words is "twenty-one billion, one hundred one million, one hundred thousand, twenty-two".