2001222200231 has 2 divisors, whose sum is σ = 2001222200232. Its totient is φ = 2001222200230.

The previous prime is 2001222200227. The next prime is 2001222200249. The reversal of 2001222200231 is 1320022221002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001222200231 - 2² = 2001222200227 is a prime.

It is a super-2 number, since 2×2001222200231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001222203231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000611100115 + 1000611100116.

It is an arithmetic number, because the mean of its divisors is an integer number (1000611100116).

Almost surely, 2^{2001222200231} is an apocalyptic number.

2001222200231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001222200231 is an equidigital number, since it uses as much as digits as its factorization.

2001222200231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 2001222200231 its reverse (1320022221002), we get a palindrome (3321244421233).

The spelling of 2001222200231 in words is "two trillion, one billion, two hundred twenty-two million, two hundred thousand, two hundred thirty-one".