111202121199977 has 2 divisors, whose sum is σ = 111202121199978. Its totient is φ = 111202121199976.

The previous prime is 111202121199971. The next prime is 111202121200039. The reversal of 111202121199977 is 779991121202111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99556971774976 + 11645149425001 = 9977824^2 + 3412499^2 .

It is a cyclic number.

It is not a de Polignac number, because 111202121199977 - 2¹⁰ = 111202121198953 is a prime.

It is not a weakly prime, because it can be changed into another prime (111202121199971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601060599988 + 55601060599989.

It is an arithmetic number, because the mean of its divisors is an integer number (55601060599989).

Almost surely, 2^{111202121199977} is an apocalyptic number.

It is an amenable number.

111202121199977 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202121199977 is an equidigital number, since it uses as much as digits as its factorization.

111202121199977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 53.

The spelling of 111202121199977 in words is "one hundred eleven trillion, two hundred two billion, one hundred twenty-one million, one hundred ninety-nine thousand, nine hundred seventy-seven".