120100221121 has 2 divisors, whose sum is σ = 120100221122. Its totient is φ = 120100221120.

The previous prime is 120100221083. The next prime is 120100221127. The reversal of 120100221121 is 121122001021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116663916721 + 3436304400 = 341561^2 + 58620^2 .

It is a cyclic number.

It is not a de Polignac number, because 120100221121 - 2²⁵ = 120066666689 is a prime.

It is a super-2 number, since 2×120100221121² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120100221127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60050110560 + 60050110561.

It is an arithmetic number, because the mean of its divisors is an integer number (60050110561).

Almost surely, 2^120100221121 is an apocalyptic number.

It is an amenable number.

120100221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120100221121 is an equidigital number, since it uses as much as digits as its factorization.

120100221121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120100221121 its reverse (121122001021), we get a palindrome (241222222142).

The spelling of 120100221121 in words is "one hundred twenty billion, one hundred million, two hundred twenty-one thousand, one hundred twenty-one".