121201120069 has 2 divisors, whose sum is σ = 121201120070. Its totient is φ = 121201120068.

The previous prime is 121201120063. The next prime is 121201120087. The reversal of 121201120069 is 960021102121.

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., 96139063969 + 25062056100 = 310063^2 + 158310^2 .

It is an emirp because it is prime and its reverse (960021102121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121201120069 - 2⁵ = 121201120037 is a prime.

It is a super-2 number, since 2×121201120069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201120063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600560034 + 60600560035.

It is an arithmetic number, because the mean of its divisors is an integer number (60600560035).

Almost surely, 2^121201120069 is an apocalyptic number.

It is an amenable number.

121201120069 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201120069 is an equidigital number, since it uses as much as digits as its factorization.

121201120069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 121201120069 in words is "one hundred twenty-one billion, two hundred one million, one hundred twenty thousand, sixty-nine".