112020212001221 has 2 divisors, whose sum is σ = 112020212001222. Its totient is φ = 112020212001220.

The previous prime is 112020212001211. The next prime is 112020212001223. The reversal of 112020212001221 is 122100212020211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80239493522500 + 31780718478721 = 8957650^2 + 5637439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112020212001221 is a prime.

Together with 112020212001223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112020212001221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112020212001223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56010106000610 + 56010106000611.

It is an arithmetic number, because the mean of its divisors is an integer number (56010106000611).

Almost surely, 2^{112020212001221} is an apocalyptic number.

It is an amenable number.

112020212001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112020212001221 is an equidigital number, since it uses as much as digits as its factorization.

112020212001221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 112020212001221 its reverse (122100212020211), we get a palindrome (234120424021432).

The spelling of 112020212001221 in words is "one hundred twelve trillion, twenty billion, two hundred twelve million, one thousand, two hundred twenty-one".