21020103230 has 64 divisors (see below), whose sum is σ = 44318292480. Its totient is φ = 7027945344.

The previous prime is 21020103191. The next prime is 21020103253. The reversal of 21020103230 is 3230102012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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, 1978292 + ... + 1988888.

It is an arithmetic number, because the mean of its divisors is an integer number (692473320).

Almost surely, 2^21020103230 is an apocalyptic number.

21020103230 is an abundant number, since it is smaller than the sum of its proper divisors (23298189250).

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

21020103230 is a wasteful number, since it uses less digits than its factorization.

21020103230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11313.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21020103230 its reverse (3230102012), we get a palindrome (24250205242).

The spelling of 21020103230 in words is "twenty-one billion, twenty million, one hundred three thousand, two hundred thirty".