2191180102 has 4 divisors (see below), whose sum is σ = 3286770156. Its totient is φ = 1095590050.

The previous prime is 2191180087. The next prime is 2191180109. The reversal of 2191180102 is 2010811912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191180109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547795024 + ... + 547795027.

It is an arithmetic number, because the mean of its divisors is an integer number (821692539).

Almost surely, 2^2191180102 is an apocalyptic number.

2191180102 is a deficient number, since it is larger than the sum of its proper divisors (1095590054).

2191180102 is a wasteful number, since it uses less digits than its factorization.

2191180102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095590053.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 2191180102 is about 46810.0427472567. The cubic root of 2191180102 is about 1298.8510760185.

The spelling of 2191180102 in words is "two billion, one hundred ninety-one million, one hundred eighty thousand, one hundred two".