21310301210202 has 12 divisors (see below), whose sum is σ = 46172319288810. Its totient is φ = 7103433736728.

The previous prime is 21310301210161. The next prime is 21310301210239. The reversal of 21310301210202 is 20201210301312.

21310301210202 is a `hidden beast` number, since 2 + 1 + 310 + 30 + 121 + 0 + 202 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20653943604921 + 656357605281 = 4544661^2 + 810159^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1183905622789 = 21310301210202 / (2 + 1 + 3 + 1 + 0 + 3 + 0 + 1 + 2 + 1 + 0 + 2 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 591952811377 + ... + 591952811412.

Almost surely, 2^{21310301210202} is an apocalyptic number.

21310301210202 is an abundant number, since it is smaller than the sum of its proper divisors (24862018078608).

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

21310301210202 is a wasteful number, since it uses less digits than its factorization.

21310301210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183905622797 (or 1183905622794 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21310301210202 its reverse (20201210301312), we get a palindrome (41511511511514).

The spelling of 21310301210202 in words is "twenty-one trillion, three hundred ten billion, three hundred one million, two hundred ten thousand, two hundred two".