21342100302 has 48 divisors (see below), whose sum is σ = 47983148928. Its totient is φ = 6850705680.

The previous prime is 21342100291. The next prime is 21342100313. The reversal of 21342100302 is 20300124312.

21342100302 is a `hidden beast` number, since 21 + 342 + 1 + 0 + 0 + 302 = 666.

It is an interprime number because it is at equal distance from previous prime (21342100291) and next prime (21342100313).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139228 + ... + 249135.

It is an arithmetic number, because the mean of its divisors is an integer number (999648936).

Almost surely, 2^21342100302 is an apocalyptic number.

21342100302 is an abundant number, since it is smaller than the sum of its proper divisors (26641048626).

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

21342100302 is a wasteful number, since it uses less digits than its factorization.

21342100302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388485 (or 388482 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21342100302 its reverse (20300124312), we get a palindrome (41642224614).

The spelling of 21342100302 in words is "twenty-one billion, three hundred forty-two million, one hundred thousand, three hundred two".