2001120022220 has 96 divisors (see below), whose sum is σ = 4702467474432. Its totient is φ = 708984000000.

The previous prime is 2001120022207. The next prime is 2001120022229. The reversal of 2001120022220 is 222200211002.

It is a junction number, because it is equal to n+sod(n) for n = 2001120022195 and 2001120022204.

It is not an unprimeable number, because it can be changed into a prime (2001120022229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6626315 + ... + 6921725.

It is an arithmetic number, because the mean of its divisors is an integer number (48984036192).

Almost surely, 2^{2001120022220} is an apocalyptic number.

2001120022220 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 2001120022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2351233737216).

2001120022220 is an abundant number, since it is smaller than the sum of its proper divisors (2701347452212).

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

2001120022220 is a wasteful number, since it uses less digits than its factorization.

2001120022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296223 (or 296221 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2001120022220 its reverse (222200211002), we get a palindrome (2223320233222).

The spelling of 2001120022220 in words is "two trillion, one billion, one hundred twenty million, twenty-two thousand, two hundred twenty".