2113212012 has 12 divisors (see below), whose sum is σ = 4930828056. Its totient is φ = 704404000.

The previous prime is 2113211981. The next prime is 2113212029. The reversal of 2113212012 is 2102123112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2113212012² = 8931330015322176288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113211982 and 2113212000.

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 3 ways as a sum of consecutive naturals, for example, 88050489 + ... + 88050512.

It is an arithmetic number, because the mean of its divisors is an integer number (410902338).

Almost surely, 2^2113212012 is an apocalyptic number.

It is an amenable number.

2113212012 is an abundant number, since it is smaller than the sum of its proper divisors (2817616044).

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

2113212012 is a wasteful number, since it uses less digits than its factorization.

2113212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176101008 (or 176101006 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2113212012 is about 45969.6857940099. The cubic root of 2113212012 is about 1283.2591124707.

Adding to 2113212012 its reverse (2102123112), we get a palindrome (4215335124).

Subtracting from 2113212012 its reverse (2102123112), we obtain a square (11088900 = 3330²).

The spelling of 2113212012 in words is "two billion, one hundred thirteen million, two hundred twelve thousand, twelve".