21000323110 has 64 divisors (see below), whose sum is σ = 41323068864. Its totient is φ = 7637760000.

The previous prime is 21000323093. The next prime is 21000323111. The reversal of 21000323110 is 1132300012.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000323111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2328610 + ... + 2337610.

It is an arithmetic number, because the mean of its divisors is an integer number (645672951).

Almost surely, 2^21000323110 is an apocalyptic number.

21000323110 is a deficient number, since it is larger than the sum of its proper divisors (20322745754).

21000323110 is a wasteful number, since it uses less digits than its factorization.

21000323110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9289.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21000323110 its reverse (1132300012), we get a palindrome (22132623122).

The spelling of 21000323110 in words is "twenty-one billion, three hundred twenty-three thousand, one hundred ten".