21300000102 has 12 divisors (see below), whose sum is σ = 46150000260. Its totient is φ = 7100000028.

The previous prime is 21300000101. The next prime is 21300000119. The reversal of 21300000102 is 20100000312.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300000101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 591666652 + ... + 591666687.

It is an arithmetic number, because the mean of its divisors is an integer number (3845833355).

Almost surely, 2^21300000102 is an apocalyptic number.

21300000102 is an abundant number, since it is smaller than the sum of its proper divisors (24850000158).

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

21300000102 is a wasteful number, since it uses less digits than its factorization.

21300000102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183333347 (or 1183333344 counting only the distinct ones).

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

Adding to 21300000102 its reverse (20100000312), we get a palindrome (41400000414).

The spelling of 21300000102 in words is "twenty-one billion, three hundred million, one hundred two", and thus it is an aban number.