111201379669 has 2 divisors, whose sum is σ = 111201379670. Its totient is φ = 111201379668.

The previous prime is 111201379577. The next prime is 111201379691. The reversal of 111201379669 is 966973102111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109342648900 + 1858730769 = 330670^2 + 43113^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201379669 - 2¹¹ = 111201377621 is a prime.

It is a super-2 number, since 2×111201379669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111201379469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600689834 + 55600689835.

It is an arithmetic number, because the mean of its divisors is an integer number (55600689835).

Almost surely, 2^111201379669 is an apocalyptic number.

It is an amenable number.

111201379669 is a deficient number, since it is larger than the sum of its proper divisors (1).

111201379669 is an equidigital number, since it uses as much as digits as its factorization.

111201379669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 111201379669 in words is "one hundred eleven billion, two hundred one million, three hundred seventy-nine thousand, six hundred sixty-nine".