2001222020120 has 64 divisors (see below), whose sum is σ = 4857572293920. Its totient is φ = 739186100224.

The previous prime is 2001222020071. The next prime is 2001222020131. The reversal of 2001222020120 is 210202221002.

It is a junction number, because it is equal to n+sod(n) for n = 2001222020095 and 2001222020104.

It is a congruent number.

It is an unprimeable number.

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, 27727862 + ... + 27799941.

Almost surely, 2^{2001222020120} is an apocalyptic number.

2001222020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001222020120 is an abundant number, since it is smaller than the sum of its proper divisors (2856350273800).

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

2001222020120 is a wasteful number, since it uses less digits than its factorization.

2001222020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55527884 (or 55527880 counting only the distinct ones).

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

Adding to 2001222020120 its reverse (210202221002), we get a palindrome (2211424241122).

The spelling of 2001222020120 in words is "two trillion, one billion, two hundred twenty-two million, twenty thousand, one hundred twenty".