1233222001 has 4 divisors (see below), whose sum is σ = 1345333104. Its totient is φ = 1121110900.

The previous prime is 1233221993. The next prime is 1233222017. The reversal of 1233222001 is 1002223321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1233222001 - 2³ = 1233221993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233222061) 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, 56055535 + ... + 56055556.

It is an arithmetic number, because the mean of its divisors is an integer number (336333276).

Almost surely, 2^1233222001 is an apocalyptic number.

1233222001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1233222001 is a deficient number, since it is larger than the sum of its proper divisors (112111103).

1233222001 is a wasteful number, since it uses less digits than its factorization.

1233222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112111102.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1233222001 is about 35117.2607274542. The cubic root of 1233222001 is about 1072.3760054289.

Adding to 1233222001 its reverse (1002223321), we get a palindrome (2235445322).

The spelling of 1233222001 in words is "one billion, two hundred thirty-three million, two hundred twenty-two thousand, one".