2121102111 has 8 divisors (see below), whose sum is σ = 2856137904. Its totient is φ = 1400067200.

The previous prime is 2121102103. The next prime is 2121102131. The reversal of 2121102111 is 1112011212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121102111 - 2³ = 2121102103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121102131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3499866 + ... + 3500471.

It is an arithmetic number, because the mean of its divisors is an integer number (357017238).

Almost surely, 2^2121102111 is an apocalyptic number.

2121102111 is a deficient number, since it is larger than the sum of its proper divisors (735035793).

2121102111 is a wasteful number, since it uses less digits than its factorization.

2121102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000441.

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

The square root of 2121102111 is about 46055.4243385076. The cubic root of 2121102111 is about 1284.8542302612.

Adding to 2121102111 its reverse (1112011212), we get a palindrome (3233113323).

The spelling of 2121102111 in words is "two billion, one hundred twenty-one million, one hundred two thousand, one hundred eleven".