121233869 has 2 divisors, whose sum is σ = 121233870. Its totient is φ = 121233868.

The previous prime is 121233859. The next prime is 121233881. The reversal of 121233869 is 968332121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115304644 + 5929225 = 10738^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 121233869 - 2²⁰ = 120185293 is a prime.

It is a super-2 number, since 2×121233869² = 29395301985418322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121233809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616934 + 60616935.

It is an arithmetic number, because the mean of its divisors is an integer number (60616935).

Almost surely, 2^121233869 is an apocalyptic number.

It is an amenable number.

121233869 is a deficient number, since it is larger than the sum of its proper divisors (1).

121233869 is an equidigital number, since it uses as much as digits as its factorization.

121233869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 121233869 is about 11010.6252774309. The cubic root of 121233869 is about 494.9271994422.

The spelling of 121233869 in words is "one hundred twenty-one million, two hundred thirty-three thousand, eight hundred sixty-nine".