2101100194 has 4 divisors (see below), whose sum is σ = 3151650294. Its totient is φ = 1050550096.

The previous prime is 2101100179. The next prime is 2101100203. The reversal of 2101100194 is 4910011012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2054355625 + 46744569 = 45325^2 + 6837^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525275047 + ... + 525275050.

Almost surely, 2^2101100194 is an apocalyptic number.

2101100194 is a deficient number, since it is larger than the sum of its proper divisors (1050550100).

2101100194 is a wasteful number, since it uses less digits than its factorization.

2101100194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050550099.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 2101100194 is about 45837.7594784038. The cubic root of 2101100194 is about 1280.8027585663.

The spelling of 2101100194 in words is "two billion, one hundred one million, one hundred thousand, one hundred ninety-four".