121225577 has 4 divisors (see below), whose sum is σ = 132246096. Its totient is φ = 110205060.

The previous prime is 121225547. The next prime is 121225603. The reversal of 121225577 is 775522121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121225577 - 2¹² = 121221481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121225547) 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, 5510243 + ... + 5510264.

It is an arithmetic number, because the mean of its divisors is an integer number (33061524).

Almost surely, 2^121225577 is an apocalyptic number.

It is an amenable number.

121225577 is a deficient number, since it is larger than the sum of its proper divisors (11020519).

121225577 is a wasteful number, since it uses less digits than its factorization.

121225577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11020518.

The product of its digits is 9800, while the sum is 32.

The square root of 121225577 is about 11010.2487256192. The cubic root of 121225577 is about 494.9159153846.

Adding to 121225577 its reverse (775522121), we get a palindrome (896747698).

The spelling of 121225577 in words is "one hundred twenty-one million, two hundred twenty-five thousand, five hundred seventy-seven".