11213211331477 has 2 divisors, whose sum is σ = 11213211331478. Its totient is φ = 11213211331476.

The previous prime is 11213211331457. The next prime is 11213211331579. The reversal of 11213211331477 is 77413311231211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7586201541636 + 3627009789841 = 2754306^2 + 1904471^2 .

It is an emirp because it is prime and its reverse (77413311231211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11213211331477 is a prime.

It is a super-2 number, since 2×11213211331477² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11213211331457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606605665738 + 5606605665739.

It is an arithmetic number, because the mean of its divisors is an integer number (5606605665739).

Almost surely, 2^{11213211331477} is an apocalyptic number.

It is an amenable number.

11213211331477 is a deficient number, since it is larger than the sum of its proper divisors (1).

11213211331477 is an equidigital number, since it uses as much as digits as its factorization.

11213211331477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

Adding to 11213211331477 its reverse (77413311231211), we get a palindrome (88626522562688).

The spelling of 11213211331477 in words is "eleven trillion, two hundred thirteen billion, two hundred eleven million, three hundred thirty-one thousand, four hundred seventy-seven".