2112123201 has 16 divisors (see below), whose sum is σ = 2966442240. Its totient is φ = 1333046160.

The previous prime is 2112123199. The next prime is 2112123203. The reversal of 2112123201 is 1023212112.

It is an interprime number because it is at equal distance from previous prime (2112123199) and next prime (2112123203).

It is not a de Polignac number, because 2112123201 - 2¹ = 2112123199 is a prime.

It is a super-2 number, since 2×2112123201² = 8922128832404972802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112123203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75166 + ... + 99368.

It is an arithmetic number, because the mean of its divisors is an integer number (185402640).

Almost surely, 2^2112123201 is an apocalyptic number.

It is an amenable number.

2112123201 is a deficient number, since it is larger than the sum of its proper divisors (854319039).

2112123201 is a wasteful number, since it uses less digits than its factorization.

2112123201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25756.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2112123201 is about 45957.8415615877. The cubic root of 2112123201 is about 1283.0386792050.

Adding to 2112123201 its reverse (1023212112), we get a palindrome (3135335313).

The spelling of 2112123201 in words is "two billion, one hundred twelve million, one hundred twenty-three thousand, two hundred one".