2121110102 has 4 divisors (see below), whose sum is σ = 3181665156. Its totient is φ = 1060555050.

The previous prime is 2121110059. The next prime is 2121110129. The reversal of 2121110102 is 2010111212.

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, 530277524 + ... + 530277527.

It is an arithmetic number, because the mean of its divisors is an integer number (795416289).

Almost surely, 2^2121110102 is an apocalyptic number.

2121110102 is a deficient number, since it is larger than the sum of its proper divisors (1060555054).

2121110102 is a wasteful number, since it uses less digits than its factorization.

2121110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060555053.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2121110102 is about 46055.5110925935. The cubic root of 2121110102 is about 1284.8558437710.

Adding to 2121110102 its reverse (2010111212), we get a palindrome (4131221314).

It can be divided in two parts, 2121110 and 102, that added together give a palindrome (2121212).

The spelling of 2121110102 in words is "two billion, one hundred twenty-one million, one hundred ten thousand, one hundred two".