191202221002 has 8 divisors (see below), whose sum is σ = 308865126276. Its totient is φ = 88247178912.

The previous prime is 191202220981. The next prime is 191202221039. The reversal of 191202221002 is 200122202191.

It can be written as a sum of positive squares in 2 ways, for example, as 141775593961 + 49426627041 = 376531^2 + 222321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 3676965763 + ... + 3676965814.

Almost surely, 2^191202221002 is an apocalyptic number.

191202221002 is a deficient number, since it is larger than the sum of its proper divisors (117662905274).

191202221002 is a wasteful number, since it uses less digits than its factorization.

191202221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7353931592.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 191202221002 its reverse (200122202191), we get a palindrome (391324423193).

The spelling of 191202221002 in words is "one hundred ninety-one billion, two hundred two million, two hundred twenty-one thousand, two".