2112102421 has 8 divisors (see below), whose sum is σ = 2481351264. Its totient is φ = 1772393520.

The previous prime is 2112102409. The next prime is 2112102427. The reversal of 2112102421 is 1242012112.

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 2112102421 - 2⁹ = 2112101909 is a prime.

It is a super-2 number, since 2×2112102421² = 8921953273588122482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112102395 and 2112102404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112102427) 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, 7384831 + ... + 7385116.

It is an arithmetic number, because the mean of its divisors is an integer number (310168908).

Almost surely, 2^2112102421 is an apocalyptic number.

It is an amenable number.

2112102421 is a deficient number, since it is larger than the sum of its proper divisors (369248843).

2112102421 is a wasteful number, since it uses less digits than its factorization.

2112102421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14769971.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2112102421 is about 45957.6154842699. The cubic root of 2112102421 is about 1283.0344714910.

Adding to 2112102421 its reverse (1242012112), we get a palindrome (3354114533).

The spelling of 2112102421 in words is "two billion, one hundred twelve million, one hundred two thousand, four hundred twenty-one".