20033222331 has 64 divisors (see below), whose sum is σ = 29856854016. Its totient is φ = 11894937600.

The previous prime is 20033222309. The next prime is 20033222333. The reversal of 20033222331 is 13322233002.

It is not a de Polignac number, because 20033222331 - 2¹⁴ = 20033205947 is a prime.

It is a super-2 number, since 2×20033222331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20033222298 and 20033222307.

It is not an unprimeable number, because it can be changed into a prime (20033222333) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9018801 + ... + 9021021.

It is an arithmetic number, because the mean of its divisors is an integer number (466513344).

Almost surely, 2^20033222331 is an apocalyptic number.

20033222331 is a deficient number, since it is larger than the sum of its proper divisors (9823631685).

20033222331 is a wasteful number, since it uses less digits than its factorization.

20033222331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20033222331 its reverse (13322233002), we get a palindrome (33355455333).

The spelling of 20033222331 in words is "twenty billion, thirty-three million, two hundred twenty-two thousand, three hundred thirty-one".