121125601 has 4 divisors (see below), whose sum is σ = 121851072. Its totient is φ = 120400132.

The previous prime is 121125593. The next prime is 121125607. The reversal of 121125601 is 106521121.

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 121125601 - 2³ = 121125593 is a prime.

It is a super-2 number, since 2×121125601² = 29342822435222402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121125607) 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, 362485 + ... + 362818.

It is an arithmetic number, because the mean of its divisors is an integer number (30462768).

Almost surely, 2^121125601 is an apocalyptic number.

It is an amenable number.

121125601 is a deficient number, since it is larger than the sum of its proper divisors (725471).

121125601 is an equidigital number, since it uses as much as digits as its factorization.

121125601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725470.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 121125601 is about 11005.7076555758. The cubic root of 121125601 is about 494.7798238568.

Adding to 121125601 its reverse (106521121), we get a palindrome (227646722).

The spelling of 121125601 in words is "one hundred twenty-one million, one hundred twenty-five thousand, six hundred one".