21403020302 has 16 divisors (see below), whose sum is σ = 32213684880. Its totient is φ = 10665153408.

The previous prime is 21403020283. The next prime is 21403020329. The reversal of 21403020302 is 20302030412.

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, 1987649 + ... + 1998387.

It is an arithmetic number, because the mean of its divisors is an integer number (2013355305).

Almost surely, 2^21403020302 is an apocalyptic number.

21403020302 is a deficient number, since it is larger than the sum of its proper divisors (10810664578).

21403020302 is a wasteful number, since it uses less digits than its factorization.

21403020302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14035.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21403020302 its reverse (20302030412), we get a palindrome (41705050714).

The spelling of 21403020302 in words is "twenty-one billion, four hundred three million, twenty thousand, three hundred two".