1001223312233 has 4 divisors (see below), whose sum is σ = 1002538980948. Its totient is φ = 999907643520.

The previous prime is 1001223312179. The next prime is 1001223312253. The reversal of 1001223312233 is 3322133221001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259190955664 + 742032356569 = 509108^2 + 861413^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001223312233 - 2²² = 1001219117929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001223312199 and 1001223312208.

It is not an unprimeable number, because it can be changed into a prime (1001223312253) 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, 657833216 + ... + 657834737.

It is an arithmetic number, because the mean of its divisors is an integer number (250634745237).

Almost surely, 2^{1001223312233} is an apocalyptic number.

It is an amenable number.

1001223312233 is a deficient number, since it is larger than the sum of its proper divisors (1315668715).

1001223312233 is an equidigital number, since it uses as much as digits as its factorization.

1001223312233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315668714.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1001223312233 its reverse (3322133221001), we get a palindrome (4323356533234).

The spelling of 1001223312233 in words is "one trillion, one billion, two hundred twenty-three million, three hundred twelve thousand, two hundred thirty-three".