1321103223201 has 32 divisors (see below), whose sum is σ = 1771987240960. Its totient is φ = 875498082624.

The previous prime is 1321103223197. The next prime is 1321103223227. The reversal of 1321103223201 is 1023223011231.

It is not a de Polignac number, because 1321103223201 - 2² = 1321103223197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321103223281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 836670030 + ... + 836671608.

It is an arithmetic number, because the mean of its divisors is an integer number (55374601280).

Almost surely, 2^{1321103223201} is an apocalyptic number.

It is an amenable number.

1321103223201 is a deficient number, since it is larger than the sum of its proper divisors (450884017759).

1321103223201 is a wasteful number, since it uses less digits than its factorization.

1321103223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1321103223201 its reverse (1023223011231), we get a palindrome (2344326234432).

The spelling of 1321103223201 in words is "one trillion, three hundred twenty-one billion, one hundred three million, two hundred twenty-three thousand, two hundred one".