121444403 has 2 divisors, whose sum is σ = 121444404. Its totient is φ = 121444402.

The previous prime is 121444369. The next prime is 121444417. The reversal of 121444403 is 304444121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121444403 - 2¹² = 121440307 is a prime.

It is not a weakly prime, because it can be changed into another prime (121444423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60722201 + 60722202.

It is an arithmetic number, because the mean of its divisors is an integer number (60722202).

Almost surely, 2^121444403 is an apocalyptic number.

121444403 is a deficient number, since it is larger than the sum of its proper divisors (1).

121444403 is an equidigital number, since it uses as much as digits as its factorization.

121444403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 121444403 is about 11020.1816228227. The cubic root of 121444403 is about 495.2135296151.

Adding to 121444403 its reverse (304444121), we get a palindrome (425888524).

The spelling of 121444403 in words is "one hundred twenty-one million, four hundred forty-four thousand, four hundred three".