121321045 has 8 divisors (see below), whose sum is σ = 146083896. Its totient is φ = 96724416.

The previous prime is 121321043. The next prime is 121321049. The reversal of 121321045 is 540123121.

It can be written as a sum of positive squares in 4 ways, for example, as 52215076 + 69105969 = 7226^2 + 8313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121321045 - 2¹ = 121321043 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 (121321043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39942 + ... + 42871.

It is an arithmetic number, because the mean of its divisors is an integer number (18260487).

Almost surely, 2^121321045 is an apocalyptic number.

It is an amenable number.

121321045 is a deficient number, since it is larger than the sum of its proper divisors (24762851).

121321045 is an equidigital number, since it uses as much as digits as its factorization.

121321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83111.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 121321045 is about 11014.5832876237. The cubic root of 121321045 is about 495.0458006119.

Adding to 121321045 its reverse (540123121), we get a palindrome (661444166).

The spelling of 121321045 in words is "one hundred twenty-one million, three hundred twenty-one thousand, forty-five".