121257067 has 4 divisors (see below), whose sum is σ = 122129560. Its totient is φ = 120384576.

The previous prime is 121257061. The next prime is 121257079. The reversal of 121257067 is 760752121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 760752121 = 31 ⋅24540391.

It is a cyclic number.

It is not a de Polignac number, because 121257067 - 2¹¹ = 121255019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121257061) 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, 436038 + ... + 436315.

It is an arithmetic number, because the mean of its divisors is an integer number (30532390).

Almost surely, 2^121257067 is an apocalyptic number.

121257067 is a deficient number, since it is larger than the sum of its proper divisors (872493).

121257067 is an equidigital number, since it uses as much as digits as its factorization.

121257067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872492.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 121257067 is about 11011.6786640367. The cubic root of 121257067 is about 494.9587653983.

The spelling of 121257067 in words is "one hundred twenty-one million, two hundred fifty-seven thousand, sixty-seven".