20003221032031 has 4 divisors (see below), whose sum is σ = 21056022139000. Its totient is φ = 18950419925064.

The previous prime is 20003221032029. The next prime is 20003221032061. The reversal of 20003221032031 is 13023012230002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20003221032031 - 2¹ = 20003221032029 is a prime.

It is a super-2 number, since 2×20003221032031² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1052801106949 = 20003221032031 / (2 + 0 + 0 + 0 + 3 + 2 + 2 + 1 + 0 + 3 + 2 + 0 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003221032061) 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, 526400553456 + ... + 526400553493.

It is an arithmetic number, because the mean of its divisors is an integer number (5264005534750).

Almost surely, 2^{20003221032031} is an apocalyptic number.

20003221032031 is a deficient number, since it is larger than the sum of its proper divisors (1052801106969).

20003221032031 is a wasteful number, since it uses less digits than its factorization.

20003221032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052801106968.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20003221032031 its reverse (13023012230002), we get a palindrome (33026233262033).

The spelling of 20003221032031 in words is "twenty trillion, three billion, two hundred twenty-one million, thirty-two thousand, thirty-one".