2121632601 has 8 divisors (see below), whose sum is σ = 3086011104. Its totient is φ = 1285837920.

The previous prime is 2121632581. The next prime is 2121632603. The reversal of 2121632601 is 1062361212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121632601 - 2⁹ = 2121632089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2121632603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32145916 + ... + 32145981.

It is an arithmetic number, because the mean of its divisors is an integer number (385751388).

Almost surely, 2^2121632601 is an apocalyptic number.

It is an amenable number.

2121632601 is a deficient number, since it is larger than the sum of its proper divisors (964378503).

2121632601 is a wasteful number, since it uses less digits than its factorization.

2121632601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64291911.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2121632601 is about 46061.1832349105. The cubic root of 2121632601 is about 1284.9613358238.

Adding to 2121632601 its reverse (1062361212), we get a palindrome (3183993813).

The spelling of 2121632601 in words is "two billion, one hundred twenty-one million, six hundred thirty-two thousand, six hundred one".