20101332331 has 4 divisors (see below), whose sum is σ = 20164743792. Its totient is φ = 20037920872.

The previous prime is 20101332323. The next prime is 20101332353. The reversal of 20101332331 is 13323310102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13323310102 = 2 ⋅6661655051.

It is a cyclic number.

It is not a de Polignac number, because 20101332331 - 2³ = 20101332323 is a prime.

It is a super-2 number, since 2×20101332331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101332299 and 20101332308.

It is not an unprimeable number, because it can be changed into a prime (20101332371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31705255 + ... + 31705888.

It is an arithmetic number, because the mean of its divisors is an integer number (5041185948).

Almost surely, 2^20101332331 is an apocalyptic number.

20101332331 is a deficient number, since it is larger than the sum of its proper divisors (63411461).

20101332331 is an equidigital number, since it uses as much as digits as its factorization.

20101332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63411460.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20101332331 its reverse (13323310102), we get a palindrome (33424642433).

The spelling of 20101332331 in words is "twenty billion, one hundred one million, three hundred thirty-two thousand, three hundred thirty-one".