20012200012501 has 2 divisors, whose sum is σ = 20012200012502. Its totient is φ = 20012200012500.

The previous prime is 20012200012481. The next prime is 20012200012517. The reversal of 20012200012501 is 10521000221002.

It is a happy number.

It is an a-pointer prime, because the next prime (20012200012517) can be obtained adding 20012200012501 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11304825930225 + 8707374082276 = 3362265^2 + 2950826^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012200012501 - 2²¹ = 20012197915349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012200012601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006100006250 + 10006100006251.

It is an arithmetic number, because the mean of its divisors is an integer number (10006100006251).

Almost surely, 2^{20012200012501} is an apocalyptic number.

It is an amenable number.

20012200012501 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012200012501 is an equidigital number, since it uses as much as digits as its factorization.

20012200012501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 20012200012501 its reverse (10521000221002), we get a palindrome (30533200233503).

The spelling of 20012200012501 in words is "twenty trillion, twelve billion, two hundred million, twelve thousand, five hundred one".