20001213221030 has 16 divisors (see below), whose sum is σ = 36002302876080. Its totient is φ = 8000458826592.

The previous prime is 20001213220993. The next prime is 20001213221039. The reversal of 20001213221030 is 3012231210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001213221039) 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, 26936 + ... + 6324804.

It is an arithmetic number, because the mean of its divisors is an integer number (2250143929755).

Almost surely, 2^{20001213221030} is an apocalyptic number.

20001213221030 is a deficient number, since it is larger than the sum of its proper divisors (16001089655050).

20001213221030 is a wasteful number, since it uses less digits than its factorization.

20001213221030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615463.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20001213221030 its reverse (3012231210002), we get a palindrome (23013444431032).

The spelling of 20001213221030 in words is "twenty trillion, one billion, two hundred thirteen million, two hundred twenty-one thousand, thirty".