112101212201021 has 2 divisors, whose sum is σ = 112101212201022. Its totient is φ = 112101212201020.

The previous prime is 112101212200973. The next prime is 112101212201059. The reversal of 112101212201021 is 120102212101211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108738074340025 + 3363137860996 = 10427755^2 + 1833886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112101212201021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112101212204021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56050606100510 + 56050606100511.

It is an arithmetic number, because the mean of its divisors is an integer number (56050606100511).

Almost surely, 2^{112101212201021} is an apocalyptic number.

It is an amenable number.

112101212201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

112101212201021 is an equidigital number, since it uses as much as digits as its factorization.

112101212201021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 112101212201021 its reverse (120102212101211), we get a palindrome (232203424302232).

The spelling of 112101212201021 in words is "one hundred twelve trillion, one hundred one billion, two hundred twelve million, two hundred one thousand, twenty-one".