20001121012007 has 2 divisors, whose sum is σ = 20001121012008. Its totient is φ = 20001121012006.

The previous prime is 20001121011947. The next prime is 20001121012027. The reversal of 20001121012007 is 70021012110002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001121012007 - 2³⁶ = 19932401535271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001121012027) by changing a digit.

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 as a sum of consecutive naturals, namely, 10000560506003 + 10000560506004.

It is an arithmetic number, because the mean of its divisors is an integer number (10000560506004).

Almost surely, 2^{20001121012007} is an apocalyptic number.

20001121012007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001121012007 is an equidigital number, since it uses as much as digits as its factorization.

20001121012007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 20001121012007 its reverse (70021012110002), we get a palindrome (90022133122009).

The spelling of 20001121012007 in words is "twenty trillion, one billion, one hundred twenty-one million, twelve thousand, seven".