11213111387 has 2 divisors, whose sum is σ = 11213111388. Its totient is φ = 11213111386.

The previous prime is 11213111309. The next prime is 11213111411. The reversal of 11213111387 is 78311131211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11213111387 - 2⁸ = 11213111131 is a prime.

It is a super-3 number, since 3×11213111387³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11213101387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606555693 + 5606555694.

It is an arithmetic number, because the mean of its divisors is an integer number (5606555694).

Almost surely, 2^11213111387 is an apocalyptic number.

11213111387 is a deficient number, since it is larger than the sum of its proper divisors (1).

11213111387 is an equidigital number, since it uses as much as digits as its factorization.

11213111387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 29.

Adding to 11213111387 its reverse (78311131211), we get a palindrome (89524242598).

The spelling of 11213111387 in words is "eleven billion, two hundred thirteen million, one hundred eleven thousand, three hundred eighty-seven".