22403212021 has 8 divisors (see below), whose sum is σ = 22495944960. Its totient is φ = 22310671152.

The previous prime is 22403212019. The next prime is 22403212043. The reversal of 22403212021 is 12021230422.

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 22403212021 - 2¹ = 22403212019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22403212021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22403212121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188136 + ... + 283198.

It is an arithmetic number, because the mean of its divisors is an integer number (2811993120).

Almost surely, 2^22403212021 is an apocalyptic number.

It is an amenable number.

22403212021 is a deficient number, since it is larger than the sum of its proper divisors (92732939).

22403212021 is an equidigital number, since it uses as much as digits as its factorization.

22403212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96035.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22403212021 its reverse (12021230422), we get a palindrome (34424442443).

The spelling of 22403212021 in words is "twenty-two billion, four hundred three million, two hundred twelve thousand, twenty-one".