120111110221 has 2 divisors, whose sum is σ = 120111110222. Its totient is φ = 120111110220.

The previous prime is 120111110183. The next prime is 120111110263. The reversal of 120111110221 is 122011111021.

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., 99107854596 + 21003255625 = 314814^2 + 144925^2 .

It is a cyclic number.

It is not a de Polignac number, because 120111110221 - 2²⁷ = 119976892493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120111110281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60055555110 + 60055555111.

It is an arithmetic number, because the mean of its divisors is an integer number (60055555111).

Almost surely, 2^120111110221 is an apocalyptic number.

It is an amenable number.

120111110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120111110221 is an equidigital number, since it uses as much as digits as its factorization.

120111110221 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 120111110221 its reverse (122011111021), we get a palindrome (242122221242).

The spelling of 120111110221 in words is "one hundred twenty billion, one hundred eleven million, one hundred ten thousand, two hundred twenty-one".