221023003 has 2 divisors, whose sum is σ = 221023004. Its totient is φ = 221023002.

The previous prime is 221022983. The next prime is 221023013. The reversal of 221023003 is 300320122.

It is a happy number.

221023003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221023003 - 2¹³ = 221014811 is a prime.

It is not a weakly prime, because it can be changed into another prime (221023013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511501 + 110511502.

It is an arithmetic number, because the mean of its divisors is an integer number (110511502).

Almost surely, 2^221023003 is an apocalyptic number.

221023003 is a deficient number, since it is larger than the sum of its proper divisors (1).

221023003 is an equidigital number, since it uses as much as digits as its factorization.

221023003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 221023003 is about 14866.8424018014. The cubic root of 221023003 is about 604.6153354709.

Adding to 221023003 its reverse (300320122), we get a palindrome (521343125).

The spelling of 221023003 in words is "two hundred twenty-one million, twenty-three thousand, three".