21011604302 has 16 divisors (see below), whose sum is σ = 33946971072. Its totient is φ = 9696192480.

The previous prime is 21011604287. The next prime is 21011604307. The reversal of 21011604302 is 20340611012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011604307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123968 + ... + 239564.

It is an arithmetic number, because the mean of its divisors is an integer number (2121685692).

Almost surely, 2^21011604302 is an apocalyptic number.

21011604302 is a deficient number, since it is larger than the sum of its proper divisors (12935366770).

21011604302 is a wasteful number, since it uses less digits than its factorization.

21011604302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122603.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 21011604302 in words is "twenty-one billion, eleven million, six hundred four thousand, three hundred two".