20211212113201 has 2 divisors, whose sum is σ = 20211212113202. Its totient is φ = 20211212113200.

The previous prime is 20211212113187. The next prime is 20211212113237. The reversal of 20211212113201 is 10231121211202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19831480095025 + 379732018176 = 4453255^2 + 616224^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211212113201 - 2³¹ = 20209064629553 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211212113241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105606056600 + 10105606056601.

It is an arithmetic number, because the mean of its divisors is an integer number (10105606056601).

Almost surely, 2^{20211212113201} is an apocalyptic number.

It is an amenable number.

20211212113201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211212113201 is an equidigital number, since it uses as much as digits as its factorization.

20211212113201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 20211212113201 its reverse (10231121211202), we get a palindrome (30442333324403).

The spelling of 20211212113201 in words is "twenty trillion, two hundred eleven billion, two hundred twelve million, one hundred thirteen thousand, two hundred one".