121272697 has 24 divisors (see below), whose sum is σ = 154464072. Its totient is φ = 94348800.

The previous prime is 121272689. The next prime is 121272703. The reversal of 121272697 is 796272121.

It can be written as a sum of positive squares in 4 ways, for example, as 26327161 + 94945536 = 5131^2 + 9744^2 .

It is not a de Polignac number, because 121272697 - 2³ = 121272689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121272647) 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 23 ways as a sum of consecutive naturals, for example, 37297 + ... + 40417.

It is an arithmetic number, because the mean of its divisors is an integer number (6436003).

Almost surely, 2^121272697 is an apocalyptic number.

It is an amenable number.

121272697 is a deficient number, since it is larger than the sum of its proper divisors (33191375).

121272697 is a wasteful number, since it uses less digits than its factorization.

121272697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209 (or 3202 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 121272697 is about 11012.3883422262. The cubic root of 121272697 is about 494.9800311640.

The spelling of 121272697 in words is "one hundred twenty-one million, two hundred seventy-two thousand, six hundred ninety-seven".