2188013212 has 24 divisors (see below), whose sum is σ = 4773847680. Its totient is φ = 852472560.

The previous prime is 2188013173. The next prime is 2188013249. The reversal of 2188013212 is 2123108812.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3551662 + ... + 3552277.

It is an arithmetic number, because the mean of its divisors is an integer number (198910320).

Almost surely, 2^2188013212 is an apocalyptic number.

2188013212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2188013212 is an abundant number, since it is smaller than the sum of its proper divisors (2585834468).

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

2188013212 is a wasteful number, since it uses less digits than its factorization.

2188013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7103961 (or 7103959 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 2188013212 is about 46776.2034799747. The cubic root of 2188013212 is about 1298.2250356307.

The spelling of 2188013212 in words is "two billion, one hundred eighty-eight million, thirteen thousand, two hundred twelve".