211220210141 has 2 divisors, whose sum is σ = 211220210142. Its totient is φ = 211220210140.

The previous prime is 211220210093. The next prime is 211220210143. The reversal of 211220210141 is 141012022112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118849804516 + 92370405625 = 344746^2 + 303925^2 .

It is a cyclic number.

It is not a de Polignac number, because 211220210141 - 2¹⁰ = 211220209117 is a prime.

It is a super-2 number, since 2×211220210141² (a number of 23 digits) contains 22 as substring.

Together with 211220210143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211220210143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105610105070 + 105610105071.

It is an arithmetic number, because the mean of its divisors is an integer number (105610105071).

Almost surely, 2^211220210141 is an apocalyptic number.

It is an amenable number.

211220210141 is a deficient number, since it is larger than the sum of its proper divisors (1).

211220210141 is an equidigital number, since it uses as much as digits as its factorization.

211220210141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211220210141 its reverse (141012022112), we get a palindrome (352232232253).

The spelling of 211220210141 in words is "two hundred eleven billion, two hundred twenty million, two hundred ten thousand, one hundred forty-one".