111220998149 has 2 divisors, whose sum is σ = 111220998150. Its totient is φ = 111220998148.

The previous prime is 111220998137. The next prime is 111220998191. The reversal of 111220998149 is 941899022111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62391047524 + 48829950625 = 249782^2 + 220975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111220998149 is a prime.

It is a super-2 number, since 2×111220998149² (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 (111220994149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610499074 + 55610499075.

It is an arithmetic number, because the mean of its divisors is an integer number (55610499075).

Almost surely, 2^111220998149 is an apocalyptic number.

It is an amenable number.

111220998149 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220998149 is an equidigital number, since it uses as much as digits as its factorization.

111220998149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 47.

The spelling of 111220998149 in words is "one hundred eleven billion, two hundred twenty million, nine hundred ninety-eight thousand, one hundred forty-nine".