211130121061 has 2 divisors, whose sum is σ = 211130121062. Its totient is φ = 211130121060.

The previous prime is 211130121023. The next prime is 211130121101. The reversal of 211130121061 is 160121031112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150629372100 + 60500748961 = 388110^2 + 245969^2 .

It is a cyclic number.

It is not a de Polignac number, because 211130121061 - 2⁷ = 211130120933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211130121161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105565060530 + 105565060531.

It is an arithmetic number, because the mean of its divisors is an integer number (105565060531).

Almost surely, 2^211130121061 is an apocalyptic number.

It is an amenable number.

211130121061 is a deficient number, since it is larger than the sum of its proper divisors (1).

211130121061 is an equidigital number, since it uses as much as digits as its factorization.

211130121061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 211130121061 its reverse (160121031112), we get a palindrome (371251152173).

The spelling of 211130121061 in words is "two hundred eleven billion, one hundred thirty million, one hundred twenty-one thousand, sixty-one".