211929119391 has 32 divisors (see below), whose sum is σ = 308980438272. Its totient is φ = 128142236160.

The previous prime is 211929119387. The next prime is 211929119393. The reversal of 211929119391 is 193911929112.

It is not a de Polignac number, because 211929119391 - 2² = 211929119387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211929119391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211929119393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44869356 + ... + 44874078.

It is an arithmetic number, because the mean of its divisors is an integer number (9655638696).

Almost surely, 2^211929119391 is an apocalyptic number.

211929119391 is a deficient number, since it is larger than the sum of its proper divisors (97051318881).

211929119391 is a wasteful number, since it uses less digits than its factorization.

211929119391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623.

The product of its digits is 78732, while the sum is 48.

The spelling of 211929119391 in words is "two hundred eleven billion, nine hundred twenty-nine million, one hundred nineteen thousand, three hundred ninety-one".