191102201092 has 48 divisors (see below), whose sum is σ = 379128153600. Its totient is φ = 83498284800.

The previous prime is 191102201051. The next prime is 191102201161. The reversal of 191102201092 is 290102201191.

It is a self number, because there is not a number n which added to its sum of digits gives 191102201092.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266913 + ... + 673384.

It is an arithmetic number, because the mean of its divisors is an integer number (7898503200).

Almost surely, 2^191102201092 is an apocalyptic number.

It is an amenable number.

191102201092 is a deficient number, since it is larger than the sum of its proper divisors (188025952508).

191102201092 is a wasteful number, since it uses less digits than its factorization.

191102201092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940492 (or 940490 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

Subtracting 191102201092 from its reverse (290102201191), we obtain a palindrome (99000000099).

The spelling of 191102201092 in words is "one hundred ninety-one billion, one hundred two million, two hundred one thousand, ninety-two".