121272669 has 12 divisors (see below), whose sum is σ = 200196256. Its totient is φ = 69298632.

The previous prime is 121272661. The next prime is 121272673. The reversal of 121272669 is 966272121.

It is not a de Polignac number, because 121272669 - 2³ = 121272661 is a prime.

It is a super-2 number, since 2×121272669² = 29414120492767122, 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 (121272661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 962419 + ... + 962544.

Almost surely, 2^121272669 is an apocalyptic number.

It is an amenable number.

121272669 is a deficient number, since it is larger than the sum of its proper divisors (78923587).

121272669 is a wasteful number, since it uses less digits than its factorization.

121272669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924976 (or 1924973 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 121272669 is about 11012.3870709306. The cubic root of 121272669 is about 494.9799930695.

The spelling of 121272669 in words is "one hundred twenty-one million, two hundred seventy-two thousand, six hundred sixty-nine".