199001222101001 has 4 divisors (see below), whose sum is σ = 199001345647104. Its totient is φ = 199001098554900.

The previous prime is 199001222100991. The next prime is 199001222101021. The reversal of 199001222101001 is 100101222100991.

199001222101001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199001222101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199001222101021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59324585 + ... + 62589206.

It is an arithmetic number, because the mean of its divisors is an integer number (49750336411776).

Almost surely, 2^{199001222101001} is an apocalyptic number.

It is an amenable number.

199001222101001 is a deficient number, since it is larger than the sum of its proper divisors (123546103).

199001222101001 is a wasteful number, since it uses less digits than its factorization.

199001222101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123546102.

The product of its (nonzero) digits is 648, while the sum is 29.

Adding to 199001222101001 its reverse (100101222100991), we get a palindrome (299102444201992).

The spelling of 199001222101001 in words is "one hundred ninety-nine trillion, one billion, two hundred twenty-two million, one hundred one thousand, one".