121257667 has 2 divisors, whose sum is σ = 121257668. Its totient is φ = 121257666.

The previous prime is 121257641. The next prime is 121257673. The reversal of 121257667 is 766752121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121257667 - 2²³ = 112869059 is a prime.

It is not a weakly prime, because it can be changed into another prime (121252667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60628833 + 60628834.

It is an arithmetic number, because the mean of its divisors is an integer number (60628834).

Almost surely, 2^121257667 is an apocalyptic number.

121257667 is a deficient number, since it is larger than the sum of its proper divisors (1).

121257667 is an equidigital number, since it uses as much as digits as its factorization.

121257667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 121257667 is about 11011.7059078056. The cubic root of 121257667 is about 494.9595817762.

The spelling of 121257667 in words is "one hundred twenty-one million, two hundred fifty-seven thousand, six hundred sixty-seven".