2112321402 has 20 divisors (see below), whose sum is σ = 4733164986. Its totient is φ = 704107080.

The previous prime is 2112321361. The next prime is 2112321439. The reversal of 2112321402 is 2041232112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1993533201 + 118788201 = 44649^2 + 10899^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6519349 + ... + 6519672.

Almost surely, 2^2112321402 is an apocalyptic number.

2112321402 is an abundant number, since it is smaller than the sum of its proper divisors (2620843584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2112321402 is a wasteful number, since it uses less digits than its factorization.

2112321402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13039035 (or 13039026 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2112321402 is about 45959.9978459530. The cubic root of 2112321402 is about 1283.0788112697.

Adding to 2112321402 its reverse (2041232112), we get a palindrome (4153553514).

The spelling of 2112321402 in words is "two billion, one hundred twelve million, three hundred twenty-one thousand, four hundred two".