20021101313213 has 64 divisors (see below), whose sum is σ = 27210215596032. Its totient is φ = 14224745249280.

The previous prime is 20021101313197. The next prime is 20021101313231. The reversal of 20021101313213 is 31231310112002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20021101313213 - 2⁴ = 20021101313197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021101313413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 548911145 + ... + 548947617.

It is an arithmetic number, because the mean of its divisors is an integer number (425159618688).

Almost surely, 2^{20021101313213} is an apocalyptic number.

It is an amenable number.

20021101313213 is a deficient number, since it is larger than the sum of its proper divisors (7189114282819).

20021101313213 is a wasteful number, since it uses less digits than its factorization.

20021101313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43194.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20021101313213 its reverse (31231310112002), we get a palindrome (51252411425215).

The spelling of 20021101313213 in words is "twenty trillion, twenty-one billion, one hundred one million, three hundred thirteen thousand, two hundred thirteen".