20321012013213 has 8 divisors (see below), whose sum is σ = 27208049558400. Its totient is φ = 13490657905088.

The previous prime is 20321012013187. The next prime is 20321012013223. The reversal of 20321012013213 is 31231021012302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20321012013213 - 2⁴² = 15922965502109 is a prime.

It is a super-2 number, since 2×20321012013213² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20321012013213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321012013223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14170858428 + ... + 14170859861.

It is an arithmetic number, because the mean of its divisors is an integer number (3401006194800).

Almost surely, 2^{20321012013213} is an apocalyptic number.

It is an amenable number.

20321012013213 is a deficient number, since it is larger than the sum of its proper divisors (6887037545187).

20321012013213 is a wasteful number, since it uses less digits than its factorization.

20321012013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28341718531.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20321012013213 its reverse (31231021012302), we get a palindrome (51552033025515).

The spelling of 20321012013213 in words is "twenty trillion, three hundred twenty-one billion, twelve million, thirteen thousand, two hundred thirteen".