21110102204 has 6 divisors (see below), whose sum is σ = 36942678864. Its totient is φ = 10555051100.

The previous prime is 21110102197. The next prime is 21110102227. The reversal of 21110102204 is 40220101112.

It is a happy number.

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, 2638762772 + ... + 2638762779.

It is an arithmetic number, because the mean of its divisors is an integer number (6157113144).

Almost surely, 2^21110102204 is an apocalyptic number.

It is an amenable number.

21110102204 is a deficient number, since it is larger than the sum of its proper divisors (15832576660).

21110102204 is a wasteful number, since it uses less digits than its factorization.

21110102204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277525555 (or 5277525553 counting only the distinct ones).

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

Adding to 21110102204 its reverse (40220101112), we get a palindrome (61330203316).

The spelling of 21110102204 in words is "twenty-one billion, one hundred ten million, one hundred two thousand, two hundred four".