2121130001 has 8 divisors (see below), whose sum is σ = 2251510344. Its totient is φ = 1991372800.

The previous prime is 2121129953. The next prime is 2121130009. The reversal of 2121130001 is 1000311212.

It can be written as a sum of positive squares in 4 ways, for example, as 1020483025 + 1100646976 = 31945^2 + 33176^2 .

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 2121130001 - 2⁶ = 2121129937 is a prime.

It is a super-2 number, since 2×2121130001² = 8998384962284520002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2121130009) 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, 148760 + ... + 162393.

It is an arithmetic number, because the mean of its divisors is an integer number (281438793).

Almost surely, 2^2121130001 is an apocalyptic number.

It is an amenable number.

2121130001 is a deficient number, since it is larger than the sum of its proper divisors (130380343).

2121130001 is a wasteful number, since it uses less digits than its factorization.

2121130001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311571.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2121130001 is about 46055.7271248647. The cubic root of 2121130001 is about 1284.8598616775.

Adding to 2121130001 its reverse (1000311212), we get a palindrome (3121441213).

The spelling of 2121130001 in words is "two billion, one hundred twenty-one million, one hundred thirty thousand, one".