1231223321201 has 8 divisors (see below), whose sum is σ = 1231672437504. Its totient is φ = 1230774292080.

The previous prime is 1231223321129. The next prime is 1231223321231. The reversal of 1231223321201 is 1021233221321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231223321201 - 2²² = 1231219126897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231223321231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41049056 + ... + 41079038.

It is an arithmetic number, because the mean of its divisors is an integer number (153959054688).

Almost surely, 2^{1231223321201} is an apocalyptic number.

It is an amenable number.

1231223321201 is a deficient number, since it is larger than the sum of its proper divisors (449116303).

1231223321201 is an equidigital number, since it uses as much as digits as its factorization.

1231223321201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43591.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1231223321201 its reverse (1021233221321), we get a palindrome (2252456542522).

The spelling of 1231223321201 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-three million, three hundred twenty-one thousand, two hundred one".