20001121012027 has 2 divisors, whose sum is σ = 20001121012028. Its totient is φ = 20001121012026.

The previous prime is 20001121012007. The next prime is 20001121012111. The reversal of 20001121012027 is 72021012110002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001121012027 - 2⁷ = 20001121011899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20001121011995 and 20001121012013.

It is not a weakly prime, because it can be changed into another prime (20001121012007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000560506013 + 10000560506014.

It is an arithmetic number, because the mean of its divisors is an integer number (10000560506014).

Almost surely, 2^{20001121012027} is an apocalyptic number.

20001121012027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001121012027 is an equidigital number, since it uses as much as digits as its factorization.

20001121012027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 20001121012027 its reverse (72021012110002), we get a palindrome (92022133122029).

The spelling of 20001121012027 in words is "twenty trillion, one billion, one hundred twenty-one million, twelve thousand, twenty-seven".