2121111102 has 32 divisors (see below), whose sum is σ = 4633593984. Its totient is φ = 641967200.

The previous prime is 2121111077. The next prime is 2121111121. The reversal of 2121111102 is 2011111212.

It is a super-2 number, since 2×2121111102² = 8998224614055308808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35152 + ... + 74012.

It is an arithmetic number, because the mean of its divisors is an integer number (144799812).

Almost surely, 2^2121111102 is an apocalyptic number.

2121111102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2121111102 is an abundant number, since it is smaller than the sum of its proper divisors (2512482882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121111102 is a wasteful number, since it uses less digits than its factorization.

2121111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39704.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2121111102 is about 46055.5219490562. The cubic root of 2121111102 is about 1284.8560456866.

Adding to 2121111102 its reverse (2011111212), we get a palindrome (4132222314).

The spelling of 2121111102 in words is "two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred two".