2001322152 has 24 divisors (see below), whose sum is σ = 5420247690. Its totient is φ = 667107360.

The previous prime is 2001322133. The next prime is 2001322163. The reversal of 2001322152 is 2512231002.

It can be written as a sum of positive squares in only one way, i.e., 1198959876 + 802362276 = 34626^2 + 28326^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×2001322152² = 8010580712171822208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13897999 + ... + 13898142.

Almost surely, 2^2001322152 is an apocalyptic number.

It is an amenable number.

2001322152 is an abundant number, since it is smaller than the sum of its proper divisors (3418925538).

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

2001322152 is a wasteful number, since it uses less digits than its factorization.

2001322152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27796153 (or 27796146 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2001322152 is about 44736.1392165216. The cubic root of 2001322152 is about 1260.1986232608.

Adding to 2001322152 its reverse (2512231002), we get a palindrome (4513553154).

The spelling of 2001322152 in words is "two billion, one million, three hundred twenty-two thousand, one hundred fifty-two".