2142112001 has 4 divisors (see below), whose sum is σ = 2142422100. Its totient is φ = 2141801904.

The previous prime is 2142111989. The next prime is 2142112009. The reversal of 2142112001 is 1002112412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1630221376 + 511890625 = 40376^2 + 22625^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142112001 - 2¹⁴ = 2142095617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142112009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144446 + ... + 158583.

It is an arithmetic number, because the mean of its divisors is an integer number (535605525).

Almost surely, 2^2142112001 is an apocalyptic number.

It is an amenable number.

2142112001 is a deficient number, since it is larger than the sum of its proper divisors (310099).

2142112001 is an equidigital number, since it uses as much as digits as its factorization.

2142112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310098.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2142112001 is about 46282.9558368953. The cubic root of 2142112001 is about 1289.0825359528.

Adding to 2142112001 its reverse (1002112412), we get a palindrome (3144224413).

The spelling of 2142112001 in words is "two billion, one hundred forty-two million, one hundred twelve thousand, one".