212102103891 has 8 divisors (see below), whose sum is σ = 282892227520. Its totient is φ = 141356691432.

The previous prime is 212102103877. The next prime is 212102103893. The reversal of 212102103891 is 198301201212.

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

It is not a de Polignac number, because 212102103891 - 2⁹ = 212102103379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102103893) 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, 11166721 + ... + 11185698.

It is an arithmetic number, because the mean of its divisors is an integer number (35361528440).

Almost surely, 2^212102103891 is an apocalyptic number.

212102103891 is a deficient number, since it is larger than the sum of its proper divisors (70790123629).

212102103891 is a wasteful number, since it uses less digits than its factorization.

212102103891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22355585.

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 212102103891 in words is "two hundred twelve billion, one hundred two million, one hundred three thousand, eight hundred ninety-one".