21002201202213 has 48 divisors (see below), whose sum is σ = 37823076096000. Its totient is φ = 10909966062240.

The previous prime is 21002201202209. The next prime is 21002201202247. The reversal of 21002201202213 is 31220210220012.

21002201202213 is a `hidden beast` number, since 2 + 100 + 220 + 120 + 221 + 3 = 666.

It is not a de Polignac number, because 21002201202213 - 2² = 21002201202209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002201202413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29558088 + ... + 30260286.

It is an arithmetic number, because the mean of its divisors is an integer number (787980752000).

Almost surely, 2^{21002201202213} is an apocalyptic number.

It is an amenable number.

21002201202213 is a deficient number, since it is larger than the sum of its proper divisors (16820874893787).

21002201202213 is a wasteful number, since it uses less digits than its factorization.

21002201202213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745382 (or 745379 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21002201202213 its reverse (31220210220012), we get a palindrome (52222411422225).

The spelling of 21002201202213 in words is "twenty-one trillion, two billion, two hundred one million, two hundred two thousand, two hundred thirteen".