21110001110 has 64 divisors (see below), whose sum is σ = 44042330880. Its totient is φ = 7204302720.

The previous prime is 21110001103. The next prime is 21110001131. The reversal of 21110001110 is 1110001112.

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 in 31 ways as a sum of consecutive naturals, for example, 176432 + ... + 270828.

It is an arithmetic number, because the mean of its divisors is an integer number (688161420).

Almost surely, 2^21110001110 is an apocalyptic number.

21110001110 is an abundant number, since it is smaller than the sum of its proper divisors (22932329770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110001110 is a wasteful number, since it uses less digits than its factorization.

21110001110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94541.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 21110001110 its reverse (1110001112), we get a palindrome (22220002222).

The spelling of 21110001110 in words is "twenty-one billion, one hundred ten million, one thousand, one hundred ten".