2002220121220 has 96 divisors (see below), whose sum is σ = 4854997929600. Its totient is φ = 685948953600.

The previous prime is 2002220121211. The next prime is 2002220121221. The reversal of 2002220121220 is 221210222002.

It is a junction number, because it is equal to n+sod(n) for n = 2002220121194 and 2002220121203.

It is not an unprimeable number, because it can be changed into a prime (2002220121221) 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, 566625 + ... + 2079784.

It is an arithmetic number, because the mean of its divisors is an integer number (50572895100).

Almost surely, 2^{2002220121220} is an apocalyptic number.

2002220121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002220121220 is an abundant number, since it is smaller than the sum of its proper divisors (2852777808380).

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

2002220121220 is a wasteful number, since it uses less digits than its factorization.

2002220121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646629 (or 2646627 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2002220121220 its reverse (221210222002), we get a palindrome (2223430343222).

The spelling of 2002220121220 in words is "two trillion, two billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty".