2181236102 has 24 divisors (see below), whose sum is σ = 3587941656. Its totient is φ = 991055744.

The previous prime is 2181236093. The next prime is 2181236117. The reversal of 2181236102 is 2016321812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9548 + ... + 66735.

It is an arithmetic number, because the mean of its divisors is an integer number (149497569).

Almost surely, 2^2181236102 is an apocalyptic number.

2181236102 is a deficient number, since it is larger than the sum of its proper divisors (1406705554).

2181236102 is a wasteful number, since it uses less digits than its factorization.

2181236102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76360 (or 76331 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2181236102 is about 46703.7054418597. The cubic root of 2181236102 is about 1296.8832836260.

Adding to 2181236102 its reverse (2016321812), we get a palindrome (4197557914).

The spelling of 2181236102 in words is "two billion, one hundred eighty-one million, two hundred thirty-six thousand, one hundred two".