2001121030 has 32 divisors (see below), whose sum is σ = 3699652320. Its totient is φ = 778855680.

The previous prime is 2001121019. The next prime is 2001121033. The reversal of 2001121030 is 301211002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2001120998 and 2001121016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001121033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153217 + ... + 165763.

It is an arithmetic number, because the mean of its divisors is an integer number (115614135).

Almost surely, 2^2001121030 is an apocalyptic number.

2001121030 is a deficient number, since it is larger than the sum of its proper divisors (1698531290).

2001121030 is a wasteful number, since it uses less digits than its factorization.

2001121030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12984.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2001121030 is about 44733.8912906087. The cubic root of 2001121030 is about 1260.1564074756.

Adding to 2001121030 its reverse (301211002), we get a palindrome (2302332032).

It can be divided in two parts, 20011 and 21030, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 2001121030 in words is "two billion, one million, one hundred twenty-one thousand, thirty".