2000021212220 has 24 divisors (see below), whose sum is σ = 4241629149408. Its totient is φ = 792087608000.

The previous prime is 2000021212171. The next prime is 2000021212229. The reversal of 2000021212220 is 222121200002.

It is a junction number, because it is equal to n+sod(n) for n = 2000021212195 and 2000021212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000021212229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495052736 + ... + 495056775.

It is an arithmetic number, because the mean of its divisors is an integer number (176734547892).

Almost surely, 2^{2000021212220} is an apocalyptic number.

2000021212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000021212220 is an abundant number, since it is smaller than the sum of its proper divisors (2241607937188).

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

2000021212220 is a wasteful number, since it uses less digits than its factorization.

2000021212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990109621 (or 990109619 counting only the distinct ones).

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

Adding to 2000021212220 its reverse (222121200002), we get a palindrome (2222142412222).

The spelling of 2000021212220 in words is "two trillion, twenty-one million, two hundred twelve thousand, two hundred twenty".