21103001034 has 64 divisors (see below), whose sum is σ = 45684228096. Its totient is φ = 6473343744.

The previous prime is 21103001027. The next prime is 21103001077. The reversal of 21103001034 is 43010030112.

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, 7971099 + ... + 7973745.

It is an arithmetic number, because the mean of its divisors is an integer number (713816064).

Almost surely, 2^21103001034 is an apocalyptic number.

21103001034 is an abundant number, since it is smaller than the sum of its proper divisors (24581227062).

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

21103001034 is a wasteful number, since it uses less digits than its factorization.

21103001034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4379.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21103001034 its reverse (43010030112), we get a palindrome (64113031146).

The spelling of 21103001034 in words is "twenty-one billion, one hundred three million, one thousand, thirty-four".