21301002102 has 64 divisors (see below), whose sum is σ = 43900600320. Its totient is φ = 6888170016.

The previous prime is 21301002067. The next prime is 21301002109. The reversal of 21301002102 is 20120010312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301002109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6439533 + ... + 6442839.

It is an arithmetic number, because the mean of its divisors is an integer number (685946880).

Almost surely, 2^21301002102 is an apocalyptic number.

21301002102 is an abundant number, since it is smaller than the sum of its proper divisors (22599598218).

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

21301002102 is a wasteful number, since it uses less digits than its factorization.

21301002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21301002102 its reverse (20120010312), we get a palindrome (41421012414).

The spelling of 21301002102 in words is "twenty-one billion, three hundred one million, two thousand, one hundred two".