20221221003 has 8 divisors (see below), whose sum is σ = 26962286400. Its totient is φ = 13480484808.

The previous prime is 20221220989. The next prime is 20221221049. The reversal of 20221221003 is 30012212202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20221221003 - 2⁶ = 20221220939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20221221103) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 185728 + ... + 273746.

It is an arithmetic number, because the mean of its divisors is an integer number (3370285800).

Almost surely, 2^20221221003 is an apocalyptic number.

20221221003 is a deficient number, since it is larger than the sum of its proper divisors (6741065397).

20221221003 is an equidigital number, since it uses as much as digits as its factorization.

20221221003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164601.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20221221003 its reverse (30012212202), we get a palindrome (50233433205).

The spelling of 20221221003 in words is "twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, three".