21110102222 has 24 divisors (see below), whose sum is σ = 35406947016. Its totient is φ = 9361448000.

The previous prime is 21110102197. The next prime is 21110102227. The reversal of 21110102222 is 22220101112.

It is a junction number, because it is equal to n+sod(n) for n = 21110102197 and 21110102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110102227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248429 + ... + 322392.

It is an arithmetic number, because the mean of its divisors is an integer number (1475289459).

Almost surely, 2^21110102222 is an apocalyptic number.

21110102222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21110102222 is a deficient number, since it is larger than the sum of its proper divisors (14296844794).

21110102222 is a wasteful number, since it uses less digits than its factorization.

21110102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570916 (or 570875 counting only the distinct ones).

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

Adding to 21110102222 its reverse (22220101112), we get a palindrome (43330203334).

The spelling of 21110102222 in words is "twenty-one billion, one hundred ten million, one hundred two thousand, two hundred twenty-two".