20203124221 has 8 divisors (see below), whose sum is σ = 23090183424. Its totient is φ = 17316289680.

The previous prime is 20203124209. The next prime is 20203124239. The reversal of 20203124221 is 12242130202.

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 20203124221 - 2¹³ = 20203116029 is a prime.

It is a super-4 number, since 4×20203124221⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203124521) 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, 242271 + ... + 314803.

It is an arithmetic number, because the mean of its divisors is an integer number (2886272928).

Almost surely, 2^20203124221 is an apocalyptic number.

It is an amenable number.

20203124221 is a deficient number, since it is larger than the sum of its proper divisors (2887059203).

20203124221 is an equidigital number, since it uses as much as digits as its factorization.

20203124221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112331.

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

Adding to 20203124221 its reverse (12242130202), we get a palindrome (32445254423).

The spelling of 20203124221 in words is "twenty billion, two hundred three million, one hundred twenty-four thousand, two hundred twenty-one".