210111212261201 has 2 divisors, whose sum is σ = 210111212261202. Its totient is φ = 210111212261200.

The previous prime is 210111212261147. The next prime is 210111212261243. The reversal of 210111212261201 is 102162212111012.

210111212261201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210060063915601 + 51148345600 = 14493449^2 + 226160^2 .

It is a cyclic number.

It is not a de Polignac number, because 210111212261201 - 2⁴² = 205713165750097 is a prime.

It is a super-2 number, since 2×210111212261201² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210111212261801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055606130600 + 105055606130601.

It is an arithmetic number, because the mean of its divisors is an integer number (105055606130601).

Almost surely, 2^{210111212261201} is an apocalyptic number.

It is an amenable number.

210111212261201 is a deficient number, since it is larger than the sum of its proper divisors (1).

210111212261201 is an equidigital number, since it uses as much as digits as its factorization.

210111212261201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 210111212261201 its reverse (102162212111012), we get a palindrome (312273424372213).

The spelling of 210111212261201 in words is "two hundred ten trillion, one hundred eleven billion, two hundred twelve million, two hundred sixty-one thousand, two hundred one".