21011210302 has 16 divisors (see below), whose sum is σ = 31695834240. Its totient is φ = 10446044832.

The previous prime is 21011210281. The next prime is 21011210317. The reversal of 21011210302 is 20301211012.

It is a congruent number.

It is an unprimeable number.

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, 352824 + ... + 408052.

It is an arithmetic number, because the mean of its divisors is an integer number (1980989640).

Almost surely, 2^21011210302 is an apocalyptic number.

21011210302 is a deficient number, since it is larger than the sum of its proper divisors (10684623938).

21011210302 is a wasteful number, since it uses less digits than its factorization.

21011210302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56307.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21011210302 its reverse (20301211012), we get a palindrome (41312421314).

The spelling of 21011210302 in words is "twenty-one billion, eleven million, two hundred ten thousand, three hundred two".