2120212221020 has 48 divisors (see below), whose sum is σ = 4509994930560. Its totient is φ = 837128787456.

The previous prime is 2120212221011. The next prime is 2120212221073. The reversal of 2120212221020 is 201222120212.

It is a happy number.

It is a super-2 number, since 2×2120212221020² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2120212221020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5881094 + ... + 6231186.

It is an arithmetic number, because the mean of its divisors is an integer number (93958227720).

Almost surely, 2^{2120212221020} is an apocalyptic number.

2120212221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120212221020 is an abundant number, since it is smaller than the sum of its proper divisors (2389782709540).

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

2120212221020 is a wasteful number, since it uses less digits than its factorization.

2120212221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354014 (or 354012 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2120212221020 its reverse (201222120212), we get a palindrome (2321434341232).

The spelling of 2120212221020 in words is "two trillion, one hundred twenty billion, two hundred twelve million, two hundred twenty-one thousand, twenty".