20200010020121 has 2 divisors, whose sum is σ = 20200010020122. Its totient is φ = 20200010020120.

The previous prime is 20200010020063. The next prime is 20200010020187. The reversal of 20200010020121 is 12102001000202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16184014060096 + 4015995960025 = 4022936^2 + 2003995^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200010020121 - 2²² = 20200005825817 is a prime.

It is not a weakly prime, because it can be changed into another prime (20200010020721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100005010060 + 10100005010061.

It is an arithmetic number, because the mean of its divisors is an integer number (10100005010061).

Almost surely, 2^{20200010020121} is an apocalyptic number.

It is an amenable number.

20200010020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200010020121 is an equidigital number, since it uses as much as digits as its factorization.

20200010020121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20200010020121 its reverse (12102001000202), we get a palindrome (32302011020323).

The spelling of 20200010020121 in words is "twenty trillion, two hundred billion, ten million, twenty thousand, one hundred twenty-one".