20223001421 has 8 divisors (see below), whose sum is σ = 23178609600. Its totient is φ = 17284045248.

The previous prime is 20223001363. The next prime is 20223001471. The reversal of 20223001421 is 12410032202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20223001421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20223001421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223001471) 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, 4160396 + ... + 4165253.

It is an arithmetic number, because the mean of its divisors is an integer number (2897326200).

Almost surely, 2^20223001421 is an apocalyptic number.

It is an amenable number.

20223001421 is a deficient number, since it is larger than the sum of its proper divisors (2955608179).

20223001421 is an equidigital number, since it uses as much as digits as its factorization.

20223001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326003.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20223001421 its reverse (12410032202), we get a palindrome (32633033623).

The spelling of 20223001421 in words is "twenty billion, two hundred twenty-three million, one thousand, four hundred twenty-one".