21103310030 has 32 divisors (see below), whose sum is σ = 41471803008. Its totient is φ = 7667898400.

The previous prime is 21103310029. The next prime is 21103310069. The reversal of 21103310030 is 3001330112.

It is a junction number, because it is equal to n+sod(n) for n = 21103309987 and 21103310014.

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, 66365 + ... + 215895.

It is an arithmetic number, because the mean of its divisors is an integer number (1295993844).

Almost surely, 2^21103310030 is an apocalyptic number.

21103310030 is a deficient number, since it is larger than the sum of its proper divisors (20368492978).

21103310030 is a wasteful number, since it uses less digits than its factorization.

21103310030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150832.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21103310030 its reverse (3001330112), we get a palindrome (24104640142).

It can be divided in two parts, 21103 and 310030, that added together give a palindrome (331133).

The spelling of 21103310030 in words is "twenty-one billion, one hundred three million, three hundred ten thousand, thirty".