121011120169 has 2 divisors, whose sum is σ = 121011120170. Its totient is φ = 121011120168.

The previous prime is 121011120161. The next prime is 121011120187. The reversal of 121011120169 is 961021110121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119785210000 + 1225910169 = 346100^2 + 35013^2 .

It is a cyclic number.

It is not a de Polignac number, because 121011120169 - 2³ = 121011120161 is a prime.

It is a super-2 number, since 2×121011120169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121011120161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505560084 + 60505560085.

It is an arithmetic number, because the mean of its divisors is an integer number (60505560085).

Almost surely, 2^121011120169 is an apocalyptic number.

It is an amenable number.

121011120169 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011120169 is an equidigital number, since it uses as much as digits as its factorization.

121011120169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 121011120169 in words is "one hundred twenty-one billion, eleven million, one hundred twenty thousand, one hundred sixty-nine".