21010000302 has 48 divisors (see below), whose sum is σ = 48784713120. Its totient is φ = 6517786176.

The previous prime is 21010000261. The next prime is 21010000327. The reversal of 21010000302 is 20300001012.

It is a happy number.

It is a super-2 number, since 2×21010000302² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 23 ways as a sum of consecutive naturals, for example, 670477 + ... + 701112.

It is an arithmetic number, because the mean of its divisors is an integer number (1016348190).

Almost surely, 2^21010000302 is an apocalyptic number.

21010000302 is an abundant number, since it is smaller than the sum of its proper divisors (27774712818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010000302 is a wasteful number, since it uses less digits than its factorization.

21010000302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371657 (or 1371654 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 21010000302 its reverse (20300001012), we get a palindrome (41310001314).

The spelling of 21010000302 in words is "twenty-one billion, ten million, three hundred two", and thus it is an aban number.