20201321013 has 16 divisors (see below), whose sum is σ = 27677675136. Its totient is φ = 13096641600.

The previous prime is 20201320987. The next prime is 20201321029. The reversal of 20201321013 is 31012310202.

It is not a de Polignac number, because 20201321013 - 2¹³ = 20201312821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201320983 and 20201321001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201321813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167488 + ... + 261638.

It is an arithmetic number, because the mean of its divisors is an integer number (1729854696).

Almost surely, 2^20201321013 is an apocalyptic number.

It is an amenable number.

20201321013 is a deficient number, since it is larger than the sum of its proper divisors (7476354123).

20201321013 is a wasteful number, since it uses less digits than its factorization.

20201321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96124.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20201321013 its reverse (31012310202), we get a palindrome (51213631215).

The spelling of 20201321013 in words is "twenty billion, two hundred one million, three hundred twenty-one thousand, thirteen".