121337427 has 4 divisors (see below), whose sum is σ = 161783240. Its totient is φ = 80891616.

The previous prime is 121337423. The next prime is 121337429. The reversal of 121337427 is 724733121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121337427 - 2² = 121337423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121337394 and 121337403.

It is not an unprimeable number, because it can be changed into a prime (121337423) 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 3 ways as a sum of consecutive naturals, for example, 20222902 + ... + 20222907.

It is an arithmetic number, because the mean of its divisors is an integer number (40445810).

Almost surely, 2^121337427 is an apocalyptic number.

121337427 is a deficient number, since it is larger than the sum of its proper divisors (40445813).

121337427 is an equidigital number, since it uses as much as digits as its factorization.

121337427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40445812.

The product of its digits is 7056, while the sum is 30.

The square root of 121337427 is about 11015.3269129881. The cubic root of 121337427 is about 495.0680816468.

The spelling of 121337427 in words is "one hundred twenty-one million, three hundred thirty-seven thousand, four hundred twenty-seven".