211020134291 has 2 divisors, whose sum is σ = 211020134292. Its totient is φ = 211020134290.

The previous prime is 211020134279. The next prime is 211020134329. The reversal of 211020134291 is 192431020112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211020134291 - 2³⁴ = 193840265107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211020134291.

It is not a weakly prime, because it can be changed into another prime (211020134231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510067145 + 105510067146.

It is an arithmetic number, because the mean of its divisors is an integer number (105510067146).

Almost surely, 2^211020134291 is an apocalyptic number.

211020134291 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020134291 is an equidigital number, since it uses as much as digits as its factorization.

211020134291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 211020134291 in words is "two hundred eleven billion, twenty million, one hundred thirty-four thousand, two hundred ninety-one".