121425911 has 4 divisors (see below), whose sum is σ = 122241000. Its totient is φ = 120610824.

The previous prime is 121425893. The next prime is 121425919. The reversal of 121425911 is 119524121.

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

It is a cyclic number.

It is not a de Polignac number, because 121425911 - 2¹⁴ = 121409527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121425919) 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, 407321 + ... + 407618.

It is an arithmetic number, because the mean of its divisors is an integer number (30560250).

Almost surely, 2^121425911 is an apocalyptic number.

121425911 is a deficient number, since it is larger than the sum of its proper divisors (815089).

121425911 is an equidigital number, since it uses as much as digits as its factorization.

121425911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815088.

The product of its digits is 720, while the sum is 26.

The square root of 121425911 is about 11019.3425847462. The cubic root of 121425911 is about 495.1883934123.

The spelling of 121425911 in words is "one hundred twenty-one million, four hundred twenty-five thousand, nine hundred eleven".