111210022061 has 2 divisors, whose sum is σ = 111210022062. Its totient is φ = 111210022060.

The previous prime is 111210022057. The next prime is 111210022087. The reversal of 111210022061 is 160220012111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110147653225 + 1062368836 = 331885^2 + 32594^2 .

It is a cyclic number.

It is not a de Polignac number, because 111210022061 - 2² = 111210022057 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111210922061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605011030 + 55605011031.

It is an arithmetic number, because the mean of its divisors is an integer number (55605011031).

Almost surely, 2^111210022061 is an apocalyptic number.

It is an amenable number.

111210022061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111210022061 is an equidigital number, since it uses as much as digits as its factorization.

111210022061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111210022061 its reverse (160220012111), we get a palindrome (271430034172).

The spelling of 111210022061 in words is "one hundred eleven billion, two hundred ten million, twenty-two thousand, sixty-one".