21112110022 has 8 divisors (see below), whose sum is σ = 31675613400. Its totient is φ = 10553572224.

The previous prime is 21112109999. The next prime is 21112110031. The reversal of 21112110022 is 22001121112.

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 = 21112109984 and 21112110011.

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, 1230747 + ... + 1247782.

It is an arithmetic number, because the mean of its divisors is an integer number (3959451675).

Almost surely, 2^21112110022 is an apocalyptic number.

21112110022 is a deficient number, since it is larger than the sum of its proper divisors (10563503378).

21112110022 is a wasteful number, since it uses less digits than its factorization.

21112110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482790.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21112110022 its reverse (22001121112), we get a palindrome (43113231134).

The spelling of 21112110022 in words is "twenty-one billion, one hundred twelve million, one hundred ten thousand, twenty-two".