2121112102 has 4 divisors (see below), whose sum is σ = 3181668156. Its totient is φ = 1060556050.

The previous prime is 2121112093. The next prime is 2121112157. The reversal of 2121112102 is 2012111212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530278024 + ... + 530278027.

It is an arithmetic number, because the mean of its divisors is an integer number (795417039).

Almost surely, 2^2121112102 is an apocalyptic number.

2121112102 is a deficient number, since it is larger than the sum of its proper divisors (1060556054).

2121112102 is a wasteful number, since it uses less digits than its factorization.

2121112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060556053.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2121112102 is about 46055.5328055164. The cubic root of 2121112102 is about 1284.8562476021.

Adding to 2121112102 its reverse (2012111212), we get a palindrome (4133223314).

It can be divided in two parts, 212111210 and 2, that added together give a palindrome (212111212).

The spelling of 2121112102 in words is "two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred two".