2123220403 has 8 divisors (see below), whose sum is σ = 2154648528. Its totient is φ = 2091855744.

The previous prime is 2123220391. The next prime is 2123220409. The reversal of 2123220403 is 3040223212.

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

It is a cyclic number.

It is not a de Polignac number, because 2123220403 - 2⁵ = 2123220371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123220409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53775 + ... + 84487.

It is an arithmetic number, because the mean of its divisors is an integer number (269331066).

Almost surely, 2^2123220403 is an apocalyptic number.

2123220403 is a deficient number, since it is larger than the sum of its proper divisors (31428125).

2123220403 is an equidigital number, since it uses as much as digits as its factorization.

2123220403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31733.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2123220403 is about 46078.4158039315. The cubic root of 2123220403 is about 1285.2818052932.

Adding to 2123220403 its reverse (3040223212), we get a palindrome (5163443615).

The spelling of 2123220403 in words is "two billion, one hundred twenty-three million, two hundred twenty thousand, four hundred three".