121211240669 has 2 divisors, whose sum is σ = 121211240670. Its totient is φ = 121211240668.

The previous prime is 121211240663. The next prime is 121211240701. The reversal of 121211240669 is 966042112121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111535960900 + 9675279769 = 333970^2 + 98363^2 .

It is a cyclic number.

It is not a de Polignac number, because 121211240669 - 2⁴ = 121211240653 is a prime.

It is a super-2 number, since 2×121211240669² (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 (121211240663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605620334 + 60605620335.

It is an arithmetic number, because the mean of its divisors is an integer number (60605620335).

Almost surely, 2^121211240669 is an apocalyptic number.

It is an amenable number.

121211240669 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211240669 is an equidigital number, since it uses as much as digits as its factorization.

121211240669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 121211240669 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred forty thousand, six hundred sixty-nine".