20001121320002 has 32 divisors (see below), whose sum is σ = 31218333113088. Its totient is φ = 9604179357696.

The previous prime is 20001121319987. The next prime is 20001121320017. The reversal of 20001121320002 is 20002312110002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20001121319987) and next prime (20001121320017).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4559993 + ... + 7797164.

It is an arithmetic number, because the mean of its divisors is an integer number (975572909784).

Almost surely, 2^{20001121320002} is an apocalyptic number.

20001121320002 is a deficient number, since it is larger than the sum of its proper divisors (11217211793086).

20001121320002 is a wasteful number, since it uses less digits than its factorization.

20001121320002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12357530.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20001121320002 its reverse (20002312110002), we get a palindrome (40003433430004).

The spelling of 20001121320002 in words is "twenty trillion, one billion, one hundred twenty-one million, three hundred twenty thousand, two".