20203010203021 has 4 divisors (see below), whose sum is σ = 20203399740544. Its totient is φ = 20202620665500.

The previous prime is 20203010203003. The next prime is 20203010203037. The reversal of 20203010203021 is 12030201030202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203010203021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20203010202986 and 20203010203004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203010203001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194690955 + ... + 194794696.

It is an arithmetic number, because the mean of its divisors is an integer number (5050849935136).

Almost surely, 2^{20203010203021} is an apocalyptic number.

It is an amenable number.

20203010203021 is a deficient number, since it is larger than the sum of its proper divisors (389537523).

20203010203021 is an equidigital number, since it uses as much as digits as its factorization.

20203010203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389537522.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20203010203021 its reverse (12030201030202), we get a palindrome (32233211233223).

The spelling of 20203010203021 in words is "twenty trillion, two hundred three billion, ten million, two hundred three thousand, twenty-one".