2152111444 has 12 divisors (see below), whose sum is σ = 4304222944. Its totient is φ = 922333464.

The previous prime is 2152111441. The next prime is 2152111453. The reversal of 2152111444 is 4441112512.

2152111444 is an admirable number.

It is a super-3 number, since 3×2152111444³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152111441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38430534 + ... + 38430589.

Almost surely, 2^2152111444 is an apocalyptic number.

It is an amenable number.

2152111444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2152111444 is a wasteful number, since it uses less digits than its factorization.

2152111444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76861134 (or 76861132 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 2152111444 is about 46390.8551764246. The cubic root of 2152111444 is about 1291.0852482375.

Adding to 2152111444 its reverse (4441112512), we get a palindrome (6593223956).

The spelling of 2152111444 in words is "two billion, one hundred fifty-two million, one hundred eleven thousand, four hundred forty-four".