21020301210213 has 24 divisors (see below), whose sum is σ = 31295545003008. Its totient is φ = 13587728196672.

The previous prime is 21020301210131. The next prime is 21020301210283. The reversal of 21020301210213 is 31201210302012.

21020301210213 is a `hidden beast` number, since 210 + 2 + 0 + 30 + 1 + 210 + 213 = 666.

It is not a de Polignac number, because 21020301210213 - 2³⁰ = 21019227468389 is a prime.

It is a super-2 number, since 2×21020301210213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020301210283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198180645 + ... + 198286682.

It is an arithmetic number, because the mean of its divisors is an integer number (1303981041792).

Almost surely, 2^{21020301210213} is an apocalyptic number.

It is an amenable number.

21020301210213 is a deficient number, since it is larger than the sum of its proper divisors (10275243792795).

21020301210213 is a wasteful number, since it uses less digits than its factorization.

21020301210213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396467513 (or 396467510 counting only the distinct ones).

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

Adding to 21020301210213 its reverse (31201210302012), we get a palindrome (52221511512225).

The spelling of 21020301210213 in words is "twenty-one trillion, twenty billion, three hundred one million, two hundred ten thousand, two hundred thirteen".