111021611369 has 2 divisors, whose sum is σ = 111021611370. Its totient is φ = 111021611368.

The previous prime is 111021611359. The next prime is 111021611401. The reversal of 111021611369 is 963116120111.

It is an a-pointer prime, because the next prime (111021611401) can be obtained adding 111021611369 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68374405225 + 42647206144 = 261485^2 + 206512^2 .

It is an emirp because it is prime and its reverse (963116120111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111021611369 - 2⁴ = 111021611353 is a prime.

It is a super-2 number, since 2×111021611369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111021611359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510805684 + 55510805685.

It is an arithmetic number, because the mean of its divisors is an integer number (55510805685).

Almost surely, 2^111021611369 is an apocalyptic number.

It is an amenable number.

111021611369 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021611369 is an equidigital number, since it uses as much as digits as its factorization.

111021611369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 32.

The spelling of 111021611369 in words is "one hundred eleven billion, twenty-one million, six hundred eleven thousand, three hundred sixty-nine".