111312100020949 has 2 divisors, whose sum is σ = 111312100020950. Its totient is φ = 111312100020948.

The previous prime is 111312100020899. The next prime is 111312100020959. The reversal of 111312100020949 is 949020001213111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108227756208049 + 3084343812900 = 10403257^2 + 1756230^2 .

It is a cyclic number.

It is not a de Polignac number, because 111312100020949 - 2¹⁵ = 111312099988181 is a prime.

It is a super-2 number, since 2×111312100020949² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111312100020959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55656050010474 + 55656050010475.

It is an arithmetic number, because the mean of its divisors is an integer number (55656050010475).

Almost surely, 2^{111312100020949} is an apocalyptic number.

It is an amenable number.

111312100020949 is a deficient number, since it is larger than the sum of its proper divisors (1).

111312100020949 is an equidigital number, since it uses as much as digits as its factorization.

111312100020949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 111312100020949 in words is "one hundred eleven trillion, three hundred twelve billion, one hundred million, twenty thousand, nine hundred forty-nine".