211010891131 has 2 divisors, whose sum is σ = 211010891132. Its totient is φ = 211010891130.

The previous prime is 211010891129. The next prime is 211010891149. The reversal of 211010891131 is 131198010112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211010891131 - 2¹ = 211010891129 is a prime.

It is a super-2 number, since 2×211010891131² (a number of 23 digits) contains 22 as substring.

Together with 211010891129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 211010891131.

It is not a weakly prime, because it can be changed into another prime (211010891101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505445565 + 105505445566.

It is an arithmetic number, because the mean of its divisors is an integer number (105505445566).

Almost surely, 2^211010891131 is an apocalyptic number.

211010891131 is a deficient number, since it is larger than the sum of its proper divisors (1).

211010891131 is an equidigital number, since it uses as much as digits as its factorization.

211010891131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 28.

The spelling of 211010891131 in words is "two hundred eleven billion, ten million, eight hundred ninety-one thousand, one hundred thirty-one".