1320001021233 has 6 divisors (see below), whose sum is σ = 1906668141794. Its totient is φ = 880000680816.

The previous prime is 1320001021223. The next prime is 1320001021237. The reversal of 1320001021233 is 3321201000231.

It can be written as a sum of positive squares in only one way, i.e., 1131951300624 + 188049720609 = 1063932^2 + 433647^2 .

It is not a de Polignac number, because 1320001021233 - 2¹⁴ = 1320001004849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320001021237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73333390060 + ... + 73333390077.

Almost surely, 2^{1320001021233} is an apocalyptic number.

It is an amenable number.

1320001021233 is a deficient number, since it is larger than the sum of its proper divisors (586667120561).

1320001021233 is a wasteful number, since it uses less digits than its factorization.

1320001021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146666780143 (or 146666780140 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1320001021233 its reverse (3321201000231), we get a palindrome (4641202021464).

The spelling of 1320001021233 in words is "one trillion, three hundred twenty billion, one million, twenty-one thousand, two hundred thirty-three".