2001022130 has 16 divisors (see below), whose sum is σ = 3604860504. Its totient is φ = 799737600.

The previous prime is 2001022129. The next prime is 2001022139. The reversal of 2001022130 is 312201002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 348680929 + 1652341201 = 18673^2 + 40649^2 .

It is not an unprimeable number, because it can be changed into a prime (2001022139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71297 + ... + 95316.

Almost surely, 2^2001022130 is an apocalyptic number.

2001022130 is a deficient number, since it is larger than the sum of its proper divisors (1603838374).

2001022130 is a wasteful number, since it uses less digits than its factorization.

2001022130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167821.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2001022130 is about 44732.7858510958. The cubic root of 2001022130 is about 1260.1356471918.

Adding to 2001022130 its reverse (312201002), we get a palindrome (2313223132).

The spelling of 2001022130 in words is "two billion, one million, twenty-two thousand, one hundred thirty".