121220267 has 12 divisors (see below), whose sum is σ = 141207696. Its totient is φ = 103758480.

The previous prime is 121220243. The next prime is 121220269. The reversal of 121220267 is 762022121.

It is a happy number.

It is not a de Polignac number, because 121220267 - 2¹⁰ = 121219243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121220269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48818 + ... + 51240.

It is an arithmetic number, because the mean of its divisors is an integer number (11767308).

Almost surely, 2^121220267 is an apocalyptic number.

121220267 is a deficient number, since it is larger than the sum of its proper divisors (19987429).

121220267 is a wasteful number, since it uses less digits than its factorization.

121220267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458 (or 3451 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 121220267 is about 11010.0075840119. The cubic root of 121220267 is about 494.9086890716.

Adding to 121220267 its reverse (762022121), we get a palindrome (883242388).

The spelling of 121220267 in words is "one hundred twenty-one million, two hundred twenty thousand, two hundred sixty-seven".