20003221031994 has 40 divisors (see below), whose sum is σ = 44827865990688. Its totient is φ = 6666872524200.

The previous prime is 20003221031977. The next prime is 20003221032017. The reversal of 20003221031994 is 49913012230002.

20003221031994 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 322 + 10 + 319 + 9 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6786232 + ... + 9276819.

Almost surely, 2^{20003221031994} is an apocalyptic number.

20003221031994 is an abundant number, since it is smaller than the sum of its proper divisors (24824644958694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20003221031994 is a wasteful number, since it uses less digits than its factorization.

20003221031994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16070752 (or 16070743 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

Adding to 20003221031994 its reverse (49913012230002), we get a palindrome (69916233261996).

The spelling of 20003221031994 in words is "twenty trillion, three billion, two hundred twenty-one million, thirty-one thousand, nine hundred ninety-four".