21001311032202 has 40 divisors (see below), whose sum is σ = 47304872854272. Its totient is φ = 6963785497800.

The previous prime is 21001311032081. The next prime is 21001311032239. The reversal of 21001311032202 is 20223011310012.

21001311032202 is a `hidden beast` number, since 210 + 0 + 131 + 1 + 0 + 322 + 0 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 339334824 + ... + 339396707.

Almost surely, 2^{21001311032202} is an apocalyptic number.

21001311032202 is an abundant number, since it is smaller than the sum of its proper divisors (26303561822070).

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

21001311032202 is a wasteful number, since it uses less digits than its factorization.

21001311032202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678731736 (or 678731727 counting only the distinct ones).

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

Adding to 21001311032202 its reverse (20223011310012), we get a palindrome (41224322342214).

The spelling of 21001311032202 in words is "twenty-one trillion, one billion, three hundred eleven million, thirty-two thousand, two hundred two".