2102320012 has 24 divisors (see below), whose sum is σ = 3979853696. Its totient is φ = 965945088.

The previous prime is 2102319979. The next prime is 2102320021. The reversal of 2102320012 is 2100232012.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 2102319974 and 2102320001.

It is an unprimeable number.

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, 79053 + ... + 102244.

Almost surely, 2^2102320012 is an apocalyptic number.

It is an amenable number.

2102320012 is a deficient number, since it is larger than the sum of its proper divisors (1877533684).

2102320012 is a wasteful number, since it uses less digits than its factorization.

2102320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181537 (or 181535 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2102320012 is about 45851.0633682579. The cubic root of 2102320012 is about 1281.0505722300.

Adding to 2102320012 its reverse (2100232012), we get a palindrome (4202552024).

The spelling of 2102320012 in words is "two billion, one hundred two million, three hundred twenty thousand, twelve".