2001022001120 has 48 divisors (see below), whose sum is σ = 4729434762528. Its totient is φ = 800066741760.

The previous prime is 2001022001117. The next prime is 2001022001131. The reversal of 2001022001120 is 211002201002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296604 + ... + 3045723.

It is an arithmetic number, because the mean of its divisors is an integer number (98529890886).

Almost surely, 2^{2001022001120} is an apocalyptic number.

2001022001120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001022001120 is an abundant number, since it is smaller than the sum of its proper divisors (2728412761408).

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

2001022001120 is a wasteful number, since it uses less digits than its factorization.

2001022001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5344683 (or 5344675 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001022001120 its reverse (211002201002), we get a palindrome (2212024202122).

The spelling of 2001022001120 in words is "two trillion, one billion, twenty-two million, one thousand, one hundred twenty".