21103203122030 has 16 divisors (see below), whose sum is σ = 38031586823520. Its totient is φ = 8431098759072.

The previous prime is 21103203121967. The next prime is 21103203122147. The reversal of 21103203122030 is 3022130230112.

It is a junction number, because it is equal to n+sod(n) for n = 21103203121993 and 21103203122011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272802514 + ... + 1272819093.

It is an arithmetic number, because the mean of its divisors is an integer number (2376974176470).

Almost surely, 2^{21103203122030} is an apocalyptic number.

21103203122030 is a deficient number, since it is larger than the sum of its proper divisors (16928383701490).

21103203122030 is a wasteful number, since it uses less digits than its factorization.

21103203122030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545622443.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21103203122030 its reverse (3022130230112), we get a palindrome (24125333352142).

The spelling of 21103203122030 in words is "twenty-one trillion, one hundred three billion, two hundred three million, one hundred twenty-two thousand, thirty".