199129245122 has 16 divisors (see below), whose sum is σ = 299399700600. Its totient is φ = 99329405952.

The previous prime is 199129245089. The next prime is 199129245169. The reversal of 199129245122 is 221542921991.

It is a Cunningham number, because it is equal to 446239²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 121690043281 + 77439201841 = 348841^2 + 278279^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11641208 + ... + 11658300.

Almost surely, 2^199129245122 is an apocalyptic number.

199129245122 is a deficient number, since it is larger than the sum of its proper divisors (100270455478).

199129245122 is a wasteful number, since it uses less digits than its factorization.

199129245122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30517.

The product of its digits is 233280, while the sum is 47.

The spelling of 199129245122 in words is "one hundred ninety-nine billion, one hundred twenty-nine million, two hundred forty-five thousand, one hundred twenty-two".