21000110030 has 32 divisors (see below), whose sum is σ = 40067123040. Its totient is φ = 7897354240.

The previous prime is 21000110029. The next prime is 21000110041. The reversal of 21000110030 is 3001100012.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91445 + ... + 224415.

It is an arithmetic number, because the mean of its divisors is an integer number (1252097595).

Almost surely, 2^21000110030 is an apocalyptic number.

21000110030 is a deficient number, since it is larger than the sum of its proper divisors (19067013010).

21000110030 is a wasteful number, since it uses less digits than its factorization.

21000110030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133924.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 21000110030 its reverse (3001100012), we get a palindrome (24001210042).

The spelling of 21000110030 in words is "twenty-one billion, one hundred ten thousand, thirty".