121971267 has 36 divisors (see below), whose sum is σ = 199955392. Its totient is φ = 71517600.

The previous prime is 121971253. The next prime is 121971281. The reversal of 121971267 is 762179121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121971253) and next prime (121971281).

It is not a de Polignac number, because 121971267 - 2⁸ = 121971011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121971217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31953 + ... + 35565.

Almost surely, 2^121971267 is an apocalyptic number.

121971267 is a deficient number, since it is larger than the sum of its proper divisors (77984125).

121971267 is a wasteful number, since it uses less digits than its factorization.

121971267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672 (or 3658 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 121971267 is about 11044.0602587997. The cubic root of 121971267 is about 495.9286271630.

The spelling of 121971267 in words is "one hundred twenty-one million, nine hundred seventy-one thousand, two hundred sixty-seven".