120112151221 has 2 divisors, whose sum is σ = 120112151222. Its totient is φ = 120112151220.

The previous prime is 120112151179. The next prime is 120112151227. The reversal of 120112151221 is 122151211021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110739200625 + 9372950596 = 332775^2 + 96814^2 .

It is a cyclic number.

It is not a de Polignac number, because 120112151221 - 2²¹ = 120110054069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120112151227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60056075610 + 60056075611.

It is an arithmetic number, because the mean of its divisors is an integer number (60056075611).

Almost surely, 2^120112151221 is an apocalyptic number.

It is an amenable number.

120112151221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120112151221 is an equidigital number, since it uses as much as digits as its factorization.

120112151221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 120112151221 its reverse (122151211021), we get a palindrome (242263362242).

The spelling of 120112151221 in words is "one hundred twenty billion, one hundred twelve million, one hundred fifty-one thousand, two hundred twenty-one".