11122161551 has 2 divisors, whose sum is σ = 11122161552. Its totient is φ = 11122161550.

The previous prime is 11122161527. The next prime is 11122161571. The reversal of 11122161551 is 15516122111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11122161551 - 2⁶ = 11122161487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11122161551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122161571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561080775 + 5561080776.

It is an arithmetic number, because the mean of its divisors is an integer number (5561080776).

Almost surely, 2^11122161551 is an apocalyptic number.

11122161551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122161551 is an equidigital number, since it uses as much as digits as its factorization.

11122161551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 26.

Adding to 11122161551 its reverse (15516122111), we get a palindrome (26638283662).

The spelling of 11122161551 in words is "eleven billion, one hundred twenty-two million, one hundred sixty-one thousand, five hundred fifty-one".