2001222230331 has 16 divisors (see below), whose sum is σ = 2671202476544. Its totient is φ = 1332695748384.

The previous prime is 2001222230309. The next prime is 2001222230351. The reversal of 2001222230331 is 1330322221002.

It is a happy number.

It is not a de Polignac number, because 2001222230331 - 2⁵ = 2001222230299 is a prime.

It is a super-2 number, since 2×2001222230331² (a number of 25 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 = 2001222230298 and 2001222230307.

It is not an unprimeable number, because it can be changed into a prime (2001222230351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12007536 + ... + 12173058.

It is an arithmetic number, because the mean of its divisors is an integer number (166950154784).

Almost surely, 2^{2001222230331} is an apocalyptic number.

2001222230331 is a deficient number, since it is larger than the sum of its proper divisors (669980246213).

2001222230331 is a wasteful number, since it uses less digits than its factorization.

2001222230331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169890.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 2001222230331 its reverse (1330322221002), we get a palindrome (3331544451333).

The spelling of 2001222230331 in words is "two trillion, one billion, two hundred twenty-two million, two hundred thirty thousand, three hundred thirty-one".