121220110958851 has 2 divisors, whose sum is σ = 121220110958852. Its totient is φ = 121220110958850.

The previous prime is 121220110958819. The next prime is 121220110958867. The reversal of 121220110958851 is 158859011022121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121220110958851 - 2⁵ = 121220110958819 is a prime.

It is a super-2 number, since 2×121220110958851² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121220110959851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610055479425 + 60610055479426.

It is an arithmetic number, because the mean of its divisors is an integer number (60610055479426).

Almost surely, 2^{121220110958851} is an apocalyptic number.

121220110958851 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220110958851 is an equidigital number, since it uses as much as digits as its factorization.

121220110958851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 46.

The spelling of 121220110958851 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred ten million, nine hundred fifty-eight thousand, eight hundred fifty-one".