112101011221 has 2 divisors, whose sum is σ = 112101011222. Its totient is φ = 112101011220.

The previous prime is 112101011213. The next prime is 112101011233. The reversal of 112101011221 is 122110101211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105293111121 + 6807900100 = 324489^2 + 82510^2 .

It is a cyclic number.

It is not a de Polignac number, because 112101011221 - 2³ = 112101011213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112101011821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56050505610 + 56050505611.

It is an arithmetic number, because the mean of its divisors is an integer number (56050505611).

Almost surely, 2^112101011221 is an apocalyptic number.

It is an amenable number.

112101011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112101011221 is an equidigital number, since it uses as much as digits as its factorization.

112101011221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 112101011221 its reverse (122110101211), we get a palindrome (234211112432).

The spelling of 112101011221 in words is "one hundred twelve billion, one hundred one million, eleven thousand, two hundred twenty-one".