121266669 has 4 divisors (see below), whose sum is σ = 161688896. Its totient is φ = 80844444.

The previous prime is 121266667. The next prime is 121266679. The reversal of 121266669 is 966662121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 966662121 = 3 ⋅322220707.

It is not a de Polignac number, because 121266669 - 2¹ = 121266667 is a prime.

It is a super-2 number, since 2×121266669² = 29411210020711122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121266667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20211109 + ... + 20211114.

It is an arithmetic number, because the mean of its divisors is an integer number (40422224).

Almost surely, 2^121266669 is an apocalyptic number.

It is an amenable number.

121266669 is a deficient number, since it is larger than the sum of its proper divisors (40422227).

121266669 is an equidigital number, since it uses as much as digits as its factorization.

121266669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40422226.

The product of its digits is 46656, while the sum is 39.

The square root of 121266669 is about 11012.1146470603. The cubic root of 121266669 is about 494.9718298427.

The spelling of 121266669 in words is "one hundred twenty-one million, two hundred sixty-six thousand, six hundred sixty-nine".