120221212220111 has 2 divisors, whose sum is σ = 120221212220112. Its totient is φ = 120221212220110.

The previous prime is 120221212220077. The next prime is 120221212220203. The reversal of 120221212220111 is 111022212122021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120221212220111 - 2²⁶ = 120221145111247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120221212220311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110606110055 + 60110606110056.

It is an arithmetic number, because the mean of its divisors is an integer number (60110606110056).

Almost surely, 2^{120221212220111} is an apocalyptic number.

120221212220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221212220111 is an equidigital number, since it uses as much as digits as its factorization.

120221212220111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 120221212220111 its reverse (111022212122021), we get a palindrome (231243424342132).

The spelling of 120221212220111 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twenty thousand, one hundred eleven".