112112212001221 has 2 divisors, whose sum is σ = 112112212001222. Its totient is φ = 112112212001220.

The previous prime is 112112212001197. The next prime is 112112212001227. The reversal of 112112212001221 is 122100212211211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67677589236321 + 44434622764900 = 8226639^2 + 6665930^2 .

It is a cyclic number.

It is not a de Polignac number, because 112112212001221 - 2⁷ = 112112212001093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112112212001227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56056106000610 + 56056106000611.

It is an arithmetic number, because the mean of its divisors is an integer number (56056106000611).

Almost surely, 2^{112112212001221} is an apocalyptic number.

It is an amenable number.

112112212001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112112212001221 is an equidigital number, since it uses as much as digits as its factorization.

112112212001221 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 19.

Adding to 112112212001221 its reverse (122100212211211), we get a palindrome (234212424212432).

The spelling of 112112212001221 in words is "one hundred twelve trillion, one hundred twelve billion, two hundred twelve million, one thousand, two hundred twenty-one".