20203101021 has 8 divisors (see below), whose sum is σ = 27115862464. Its totient is φ = 13379536800.

The previous prime is 20203100999. The next prime is 20203101043. The reversal of 20203101021 is 12010130202.

It is an interprime number because it is at equal distance from previous prime (20203100999) and next prime (20203101043).

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

It is not a de Polignac number, because 20203101021 - 2⁵ = 20203100989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20203100988 and 20203101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213101021) 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, 22298776 + ... + 22299681.

It is an arithmetic number, because the mean of its divisors is an integer number (3389482808).

Almost surely, 2^20203101021 is an apocalyptic number.

It is an amenable number.

20203101021 is a deficient number, since it is larger than the sum of its proper divisors (6912761443).

20203101021 is a wasteful number, since it uses less digits than its factorization.

20203101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44598611.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20203101021 its reverse (12010130202), we get a palindrome (32213231223).

The spelling of 20203101021 in words is "twenty billion, two hundred three million, one hundred one thousand, twenty-one".