20003221032028 has 48 divisors (see below), whose sum is σ = 37729467213984. Its totient is φ = 9224643870720.

The previous prime is 20003221032023. The next prime is 20003221032029. The reversal of 20003221032028 is 82023012230002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20003221031993 and 20003221032011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003221032023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016362348 + ... + 1016382028.

It is an arithmetic number, because the mean of its divisors is an integer number (786030566958).

Almost surely, 2^{20003221032028} is an apocalyptic number.

It is an amenable number.

20003221032028 is a deficient number, since it is larger than the sum of its proper divisors (17726246181956).

20003221032028 is a wasteful number, since it uses less digits than its factorization.

20003221032028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34822 (or 34820 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The spelling of 20003221032028 in words is "twenty trillion, three billion, two hundred twenty-one million, thirty-two thousand, twenty-eight".