2212151440 has 20 divisors (see below), whose sum is σ = 5143252284. Its totient is φ = 884860544.

The previous prime is 2212151429. The next prime is 2212151479. The reversal of 2212151440 is 441512122.

It can be written as a sum of positive squares in 2 ways, for example, as 1744899984 + 467251456 = 41772^2 + 21616^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×2212151440² = 9787227986988147200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13825867 + ... + 13826026.

Almost surely, 2^2212151440 is an apocalyptic number.

2212151440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212151440 is an abundant number, since it is smaller than the sum of its proper divisors (2931100844).

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

2212151440 is a wasteful number, since it uses less digits than its factorization.

2212151440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27651906 (or 27651900 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2212151440 is about 47033.5140086301. The cubic root of 2212151440 is about 1302.9816060341.

Adding to 2212151440 its reverse (441512122), we get a palindrome (2653663562).

The spelling of 2212151440 in words is "two billion, two hundred twelve million, one hundred fifty-one thousand, four hundred forty".