21601002130 has 16 divisors (see below), whose sum is σ = 39709077120. Its totient is φ = 8456562352.

The previous prime is 21601002109. The next prime is 21601002149. The reversal of 21601002130 is 3120010612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22979320 + ... + 22980259.

It is an arithmetic number, because the mean of its divisors is an integer number (2481817320).

Almost surely, 2^21601002130 is an apocalyptic number.

21601002130 is a deficient number, since it is larger than the sum of its proper divisors (18108074990).

21601002130 is a wasteful number, since it uses less digits than its factorization.

21601002130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45959633.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21601002130 its reverse (3120010612), we get a palindrome (24721012742).

The spelling of 21601002130 in words is "twenty-one billion, six hundred one million, two thousand, one hundred thirty".