2112110421 has 32 divisors (see below), whose sum is σ = 2951477760. Its totient is φ = 1342353600.

The previous prime is 2112110417. The next prime is 2112110431. The reversal of 2112110421 is 1240112112.

It is not a de Polignac number, because 2112110421 - 2² = 2112110417 is a prime.

It is a super-2 number, since 2×2112110421² = 8922020860993594482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2112110421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112110431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1092826 + ... + 1094756.

It is an arithmetic number, because the mean of its divisors is an integer number (92233680).

Almost surely, 2^2112110421 is an apocalyptic number.

It is an amenable number.

2112110421 is a deficient number, since it is larger than the sum of its proper divisors (839367339).

2112110421 is a wasteful number, since it uses less digits than its factorization.

2112110421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 2112110421 is about 45957.7025209050. The cubic root of 2112110421 is about 1283.0360914034.

Adding to 2112110421 its reverse (1240112112), we get a palindrome (3352222533).

The spelling of 2112110421 in words is "two billion, one hundred twelve million, one hundred ten thousand, four hundred twenty-one".