121375001 has 4 divisors (see below), whose sum is σ = 132409104. Its totient is φ = 110340900.

The previous prime is 121374991. The next prime is 121375039. The reversal of 121375001 is 100573121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100573121 = 11 ⋅9143011.

It is a cyclic number.

It is not a de Polignac number, because 121375001 - 2¹⁰ = 121373977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121375091) 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, 5517035 + ... + 5517056.

It is an arithmetic number, because the mean of its divisors is an integer number (33102276).

Almost surely, 2^121375001 is an apocalyptic number.

121375001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121375001 is a deficient number, since it is larger than the sum of its proper divisors (11034103).

121375001 is a wasteful number, since it uses less digits than its factorization.

121375001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11034102.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 121375001 is about 11017.0323136496. The cubic root of 121375001 is about 495.1191781875.

The spelling of 121375001 in words is "one hundred twenty-one million, three hundred seventy-five thousand, one".