20201213331 has 24 divisors (see below), whose sum is σ = 31430533680. Its totient is φ = 12428974656.

The previous prime is 20201213309. The next prime is 20201213363. The reversal of 20201213331 is 13331210202.

It is not a de Polignac number, because 20201213331 - 2⁵ = 20201213299 is a prime.

It is a super-2 number, since 2×20201213331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20201213371) 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, 671725 + ... + 701153.

It is an arithmetic number, because the mean of its divisors is an integer number (1309605570).

Almost surely, 2^20201213331 is an apocalyptic number.

20201213331 is a deficient number, since it is larger than the sum of its proper divisors (11229320349).

20201213331 is a wasteful number, since it uses less digits than its factorization.

20201213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35315 (or 35312 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20201213331 its reverse (13331210202), we get a palindrome (33532423533).

The spelling of 20201213331 in words is "twenty billion, two hundred one million, two hundred thirteen thousand, three hundred thirty-one".