1002100122191 has 8 divisors (see below), whose sum is σ = 1145477185440. Its totient is φ = 858778034688.

The previous prime is 1002100122073. The next prime is 1002100122203. The reversal of 1002100122191 is 1912210012001.

1002100122191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-1002100122191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002100127191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13704866 + ... + 13777791.

It is an arithmetic number, because the mean of its divisors is an integer number (143184648180).

Almost surely, 2^{1002100122191} is an apocalyptic number.

1002100122191 is a deficient number, since it is larger than the sum of its proper divisors (143377063249).

1002100122191 is an equidigital number, since it uses as much as digits as its factorization.

1002100122191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27487873.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 1002100122191 its reverse (1912210012001), we get a palindrome (2914310134192).

The spelling of 1002100122191 in words is "one trillion, two billion, one hundred million, one hundred twenty-two thousand, one hundred ninety-one".