2120212221012 has 48 divisors (see below), whose sum is σ = 5735839831680. Its totient is φ = 676009692864.

The previous prime is 2120212221011. The next prime is 2120212221073. The reversal of 2120212221012 is 2101222120212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120212221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426771313 + ... + 426776280.

It is an arithmetic number, because the mean of its divisors is an integer number (119496663160).

Almost surely, 2^{2120212221012} is an apocalyptic number.

It is an amenable number.

2120212221012 is an abundant number, since it is smaller than the sum of its proper divisors (3615627610668).

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

2120212221012 is a wasteful number, since it uses less digits than its factorization.

2120212221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853547629 (or 853547621 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2120212221012 its reverse (2101222120212), we get a palindrome (4221434341224).

The spelling of 2120212221012 in words is "two trillion, one hundred twenty billion, two hundred twelve million, two hundred twenty-one thousand, twelve".