211202210121241 has 2 divisors, whose sum is σ = 211202210121242. Its totient is φ = 211202210121240.

The previous prime is 211202210121239. The next prime is 211202210121247. The reversal of 211202210121241 is 142121012202112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209244180825625 + 1958029295616 = 14465275^2 + 1399296^2 .

It is a cyclic number.

It is not a de Polignac number, because 211202210121241 - 2¹ = 211202210121239 is a prime.

Together with 211202210121239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211202210121247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601105060620 + 105601105060621.

It is an arithmetic number, because the mean of its divisors is an integer number (105601105060621).

Almost surely, 2^{211202210121241} is an apocalyptic number.

It is an amenable number.

211202210121241 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202210121241 is an equidigital number, since it uses as much as digits as its factorization.

211202210121241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 211202210121241 its reverse (142121012202112), we get a palindrome (353323222323353).

The spelling of 211202210121241 in words is "two hundred eleven trillion, two hundred two billion, two hundred ten million, one hundred twenty-one thousand, two hundred forty-one".