1211402223313 has 2 divisors, whose sum is σ = 1211402223314. Its totient is φ = 1211402223312.

The previous prime is 1211402223299. The next prime is 1211402223371. The reversal of 1211402223313 is 3133222041121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929560154769 + 281842068544 = 964137^2 + 530888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211402223313 is a prime.

It is a super-3 number, since 3×1211402223313³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1211402223373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605701111656 + 605701111657.

It is an arithmetic number, because the mean of its divisors is an integer number (605701111657).

Almost surely, 2^{1211402223313} is an apocalyptic number.

It is an amenable number.

1211402223313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211402223313 is an equidigital number, since it uses as much as digits as its factorization.

1211402223313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1211402223313 its reverse (3133222041121), we get a palindrome (4344624264434).

The spelling of 1211402223313 in words is "one trillion, two hundred eleven billion, four hundred two million, two hundred twenty-three thousand, three hundred thirteen".