121023445 has 12 divisors (see below), whose sum is σ = 153276300. Its totient is φ = 91721664.

The previous prime is 121023437. The next prime is 121023479. The reversal of 121023445 is 544320121.

It can be written as a sum of positive squares in 2 ways, for example, as 43970161 + 77053284 = 6631^2 + 8778^2 .

It is not a de Polignac number, because 121023445 - 2³ = 121023437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31720 + ... + 35329.

It is an arithmetic number, because the mean of its divisors is an integer number (12773025).

Almost surely, 2^121023445 is an apocalyptic number.

It is an amenable number.

121023445 is a deficient number, since it is larger than the sum of its proper divisors (32252855).

121023445 is an equidigital number, since it uses as much as digits as its factorization.

121023445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67092 (or 67073 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 121023445 is about 11001.0656302015. The cubic root of 121023445 is about 494.6406874465.

Adding to 121023445 its reverse (544320121), we get a palindrome (665343566).

The spelling of 121023445 in words is "one hundred twenty-one million, twenty-three thousand, four hundred forty-five".