121250345 has 4 divisors (see below), whose sum is σ = 145500420. Its totient is φ = 97000272.

The previous prime is 121250333. The next prime is 121250347. The reversal of 121250345 is 543052121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543052121 = 4409 ⋅123169.

It can be written as a sum of positive squares in 2 ways, for example, as 58079641 + 63170704 = 7621^2 + 7948^2 .

It is a cyclic number.

It is not a de Polignac number, because 121250345 - 2¹² = 121246249 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 121250345.

It is not an unprimeable number, because it can be changed into a prime (121250347) 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, 12125030 + ... + 12125039.

It is an arithmetic number, because the mean of its divisors is an integer number (36375105).

Almost surely, 2^121250345 is an apocalyptic number.

It is an amenable number.

121250345 is a deficient number, since it is larger than the sum of its proper divisors (24250075).

121250345 is an equidigital number, since it uses as much as digits as its factorization.

121250345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24250074.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 121250345 is about 11011.3734384045. The cubic root of 121250345 is about 494.9496190604.

The spelling of 121250345 in words is "one hundred twenty-one million, two hundred fifty thousand, three hundred forty-five".