2001120030 has 192 divisors, whose sum is σ = 6447168000. Its totient is φ = 419344128.

The previous prime is 2001120013. The next prime is 2001120047. The reversal of 2001120030 is 300211002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2001120013) and next prime (2001120047).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2001119994 and 2001120021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1334221 + ... + 1335719.

It is an arithmetic number, because the mean of its divisors is an integer number (33579000).

Almost surely, 2^2001120030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001120030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3223584000).

2001120030 is an abundant number, since it is smaller than the sum of its proper divisors (4446047970).

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

2001120030 is a wasteful number, since it uses less digits than its factorization.

2001120030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2001120030 is about 44733.8801133995. The cubic root of 2001120030 is about 1260.1561975672.

Adding to 2001120030 its reverse (300211002), we get a palindrome (2301331032).

The spelling of 2001120030 in words is "two billion, one million, one hundred twenty thousand, thirty".