2001022011120 has 320 divisors, whose sum is σ = 6840563747328. Its totient is φ = 479838720000.

The previous prime is 2001022011103. The next prime is 2001022011277. The reversal of 2001022011120 is 211102201002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2001022011096 and 2001022011105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 344229334 + ... + 344235146.

Almost surely, 2^{2001022011120} is an apocalyptic number.

2001022011120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001022011120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3420281873664).

2001022011120 is an abundant number, since it is smaller than the sum of its proper divisors (4839541736208).

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

2001022011120 is a wasteful number, since it uses less digits than its factorization.

2001022011120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7232 (or 7226 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001022011120 its reverse (211102201002), we get a palindrome (2212124212122).

The spelling of 2001022011120 in words is "two trillion, one billion, twenty-two million, eleven thousand, one hundred twenty".