2112621263 has 8 divisors (see below), whose sum is σ = 2309051520. Its totient is φ = 1924208640.

The previous prime is 2112621257. The next prime is 2112621293. The reversal of 2112621263 is 3621262112.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112621263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112621223) 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, 2003858 + ... + 2004911.

It is an arithmetic number, because the mean of its divisors is an integer number (288631440).

Almost surely, 2^2112621263 is an apocalyptic number.

2112621263 is a deficient number, since it is larger than the sum of its proper divisors (196430257).

2112621263 is a wasteful number, since it uses less digits than its factorization.

2112621263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008817.

The product of its digits is 1728, while the sum is 26.

The square root of 2112621263 is about 45963.2599257276. The cubic root of 2112621263 is about 1283.1395228468.

Adding to 2112621263 its reverse (3621262112), we get a palindrome (5733883375).

The spelling of 2112621263 in words is "two billion, one hundred twelve million, six hundred twenty-one thousand, two hundred sixty-three".