22156003 has 2 divisors, whose sum is σ = 22156004. Its totient is φ = 22156002.

The previous prime is 22155989. The next prime is 22156009. The reversal of 22156003 is 30065122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22156003 - 2⁹ = 22155491 is a prime.

It is not a weakly prime, because it can be changed into another prime (22156009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11078001 + 11078002.

It is an arithmetic number, because the mean of its divisors is an integer number (11078002).

Almost surely, 2^22156003 is an apocalyptic number.

22156003 is a deficient number, since it is larger than the sum of its proper divisors (1).

22156003 is an equidigital number, since it uses as much as digits as its factorization.

22156003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 22156003 is about 4707.0163585864. The cubic root of 22156003 is about 280.8646866487.

It can be divided in two parts, 22 and 156003, that added together give a square (156025 = 395²).

The spelling of 22156003 in words is "twenty-two million, one hundred fifty-six thousand, three".