21020110430 has 16 divisors (see below), whose sum is σ = 41275853424. Its totient is φ = 7643676480.

The previous prime is 21020110429. The next prime is 21020110499. The reversal of 21020110430 is 3401102012.

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, 95545847 + ... + 95546066.

It is an arithmetic number, because the mean of its divisors is an integer number (2579740839).

Almost surely, 2^21020110430 is an apocalyptic number.

21020110430 is a deficient number, since it is larger than the sum of its proper divisors (20255742994).

21020110430 is a wasteful number, since it uses less digits than its factorization.

21020110430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191091931.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21020110430 its reverse (3401102012), we get a palindrome (24421212442).

The spelling of 21020110430 in words is "twenty-one billion, twenty million, one hundred ten thousand, four hundred thirty".