1213020211333 has 12 divisors (see below), whose sum is σ = 1445480532972. Its totient is φ = 1014372300480.

The previous prime is 1213020211297. The next prime is 1213020211367. The reversal of 1213020211333 is 3331120203121.

It can be written as a sum of positive squares in 2 ways, for example, as 31020720129 + 1181999491204 = 176127^2 + 1087198^2 .

It is not a de Polignac number, because 1213020211333 - 2²⁹ = 1212483340421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213020611333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301894510 + ... + 301898527.

It is an arithmetic number, because the mean of its divisors is an integer number (120456711081).

Almost surely, 2^{1213020211333} is an apocalyptic number.

It is an amenable number.

1213020211333 is a deficient number, since it is larger than the sum of its proper divisors (232460321639).

1213020211333 is an equidigital number, since it uses as much as digits as its factorization.

1213020211333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603793092 (or 603793085 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1213020211333 its reverse (3331120203121), we get a palindrome (4544140414454).

The spelling of 1213020211333 in words is "one trillion, two hundred thirteen billion, twenty million, two hundred eleven thousand, three hundred thirty-three".