121051445 has 4 divisors (see below), whose sum is σ = 145261740. Its totient is φ = 96841152.

The previous prime is 121051439. The next prime is 121051459. The reversal of 121051445 is 544150121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544150121 = 7207 ⋅75503.

It can be written as a sum of positive squares in 2 ways, for example, as 70442449 + 50608996 = 8393^2 + 7114^2 .

It is a cyclic number.

It is not a de Polignac number, because 121051445 - 2¹² = 121047349 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121051445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12105140 + ... + 12105149.

It is an arithmetic number, because the mean of its divisors is an integer number (36315435).

Almost surely, 2^121051445 is an apocalyptic number.

It is an amenable number.

121051445 is a deficient number, since it is larger than the sum of its proper divisors (24210295).

121051445 is an equidigital number, since it uses as much as digits as its factorization.

121051445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24210294.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 121051445 is about 11002.3381605911. The cubic root of 121051445 is about 494.6788312163.

The spelling of 121051445 in words is "one hundred twenty-one million, fifty-one thousand, four hundred forty-five".