1223311201213 has 16 divisors (see below), whose sum is σ = 1283212782720. Its totient is φ = 1163971310656.

The previous prime is 1223311201171. The next prime is 1223311201267. The reversal of 1223311201213 is 3121021133221.

It is a cyclic number.

It is not a de Polignac number, because 1223311201213 - 2³³ = 1214721266621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223311201813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28383306 + ... + 28426372.

It is an arithmetic number, because the mean of its divisors is an integer number (80200798920).

Almost surely, 2^{1223311201213} is an apocalyptic number.

It is an amenable number.

1223311201213 is a deficient number, since it is larger than the sum of its proper divisors (59901581507).

1223311201213 is a wasteful number, since it uses less digits than its factorization.

1223311201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49556.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1223311201213 its reverse (3121021133221), we get a palindrome (4344332334434).

The spelling of 1223311201213 in words is "one trillion, two hundred twenty-three billion, three hundred eleven million, two hundred one thousand, two hundred thirteen".