2212156478224 has 225 divisors, whose sum is σ = 5496885918135. Its totient is φ = 859915869120.

The previous prime is 2212156478171. The next prime is 2212156478227. The reversal of 2212156478224 is 4228746512122.

The square root of 2212156478224 is 1487332.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212156478227) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 5039080597 + ... + 5039081035.

Almost surely, 2^{2212156478224} is an apocalyptic number.

2212156478224 is the 1487332-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212156478224

2212156478224 is an abundant number, since it is smaller than the sum of its proper divisors (3284729439911).

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

2212156478224 is an frugal number, since it uses more digits than its factorization.

2212156478224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 459 counting only the distinct ones).

The product of its digits is 860160, while the sum is 46.

The spelling of 2212156478224 in words is "two trillion, two hundred twelve billion, one hundred fifty-six million, four hundred seventy-eight thousand, two hundred twenty-four".