201121212012001 has 2 divisors, whose sum is σ = 201121212012002. Its totient is φ = 201121212012000.

The previous prime is 201121212011807. The next prime is 201121212012043. The reversal of 201121212012001 is 100210212121102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195176295243601 + 5944916768400 = 13970551^2 + 2438220^2 .

It is a cyclic number.

It is not a de Polignac number, because 201121212012001 - 2¹¹ = 201121212009953 is a prime.

It is not a weakly prime, because it can be changed into another prime (201121212010001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560606006000 + 100560606006001.

It is an arithmetic number, because the mean of its divisors is an integer number (100560606006001).

Almost surely, 2^{201121212012001} is an apocalyptic number.

It is an amenable number.

201121212012001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121212012001 is an equidigital number, since it uses as much as digits as its factorization.

201121212012001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201121212012001 its reverse (100210212121102), we get a palindrome (301331424133103).

The spelling of 201121212012001 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twelve million, twelve thousand, one".