22021403 has 2 divisors, whose sum is σ = 22021404. Its totient is φ = 22021402.

The previous prime is 22021397. The next prime is 22021423. The reversal of 22021403 is 30412022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22021403 - 2¹⁰ = 22020379 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010701 + 11010702.

It is an arithmetic number, because the mean of its divisors is an integer number (11010702).

Almost surely, 2^22021403 is an apocalyptic number.

22021403 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021403 is an equidigital number, since it uses as much as digits as its factorization.

22021403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22021403 is about 4692.6967726458. The cubic root of 22021403 is about 280.2947703536.

Adding to 22021403 its reverse (30412022), we get a palindrome (52433425).

The spelling of 22021403 in words is "twenty-two million, twenty-one thousand, four hundred three".