121569227 has 32 divisors (see below), whose sum is σ = 144027072. Its totient is φ = 101597184.

The previous prime is 121569221. The next prime is 121569233. The reversal of 121569227 is 722965121.

It is an interprime number because it is at equal distance from previous prime (121569221) and next prime (121569233).

It is not a de Polignac number, because 121569227 - 2⁴ = 121569211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121569221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1136108 + ... + 1136214.

It is an arithmetic number, because the mean of its divisors is an integer number (4500846).

Almost surely, 2^121569227 is an apocalyptic number.

121569227 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

121569227 is a deficient number, since it is larger than the sum of its proper divisors (22457845).

121569227 is a wasteful number, since it uses less digits than its factorization.

121569227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its digits is 15120, while the sum is 35.

The square root of 121569227 is about 11025.8435958434. The cubic root of 121569227 is about 495.3831363541.

The spelling of 121569227 in words is "one hundred twenty-one million, five hundred sixty-nine thousand, two hundred twenty-seven".