20000233121201 has 2 divisors, whose sum is σ = 20000233121202. Its totient is φ = 20000233121200.

The previous prime is 20000233121179. The next prime is 20000233121203. The reversal of 20000233121201 is 10212133200002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18989854330225 + 1010378790976 = 4357735^2 + 1005176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000233121201 is a prime.

Together with 20000233121203, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20000233121201.

It is not a weakly prime, because it can be changed into another prime (20000233121203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000116560600 + 10000116560601.

It is an arithmetic number, because the mean of its divisors is an integer number (10000116560601).

Almost surely, 2^{20000233121201} is an apocalyptic number.

It is an amenable number.

20000233121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000233121201 is an equidigital number, since it uses as much as digits as its factorization.

20000233121201 is an evil number, because the sum of its binary digits is even.

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

Adding to 20000233121201 its reverse (10212133200002), we get a palindrome (30212366321203).

The spelling of 20000233121201 in words is "twenty trillion, two hundred thirty-three million, one hundred twenty-one thousand, two hundred one".