211001002129 has 2 divisors, whose sum is σ = 211001002130. Its totient is φ = 211001002128.

The previous prime is 211001002087. The next prime is 211001002139. The reversal of 211001002129 is 921200100112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208794163600 + 2206838529 = 456940^2 + 46977^2 .

It is a cyclic number.

It is not a de Polignac number, because 211001002129 - 2¹⁹ = 211000477841 is a prime.

It is not a weakly prime, because it can be changed into another prime (211001002139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500501064 + 105500501065.

It is an arithmetic number, because the mean of its divisors is an integer number (105500501065).

Almost surely, 2^211001002129 is an apocalyptic number.

It is an amenable number.

211001002129 is a deficient number, since it is larger than the sum of its proper divisors (1).

211001002129 is an equidigital number, since it uses as much as digits as its factorization.

211001002129 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.

The spelling of 211001002129 in words is "two hundred eleven billion, one million, two thousand, one hundred twenty-nine".