19902122201 has 8 divisors (see below), whose sum is σ = 21435980160. Its totient is φ = 18368682192.

The previous prime is 19902122183. The next prime is 19902122213. The reversal of 19902122201 is 10222120991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19902122201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19902122281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841 + ... + 199518.

It is an arithmetic number, because the mean of its divisors is an integer number (2679497520).

Almost surely, 2^19902122201 is an apocalyptic number.

It is an amenable number.

19902122201 is a deficient number, since it is larger than the sum of its proper divisors (1533857959).

19902122201 is a wasteful number, since it uses less digits than its factorization.

19902122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208975.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 19902122201 in words is "nineteen billion, nine hundred two million, one hundred twenty-two thousand, two hundred one".