2112212021020 has 24 divisors (see below), whose sum is σ = 4481373549744. Its totient is φ = 836174654976.

The previous prime is 2112212020999. The next prime is 2112212021063. The reversal of 2112212021020 is 201202122112.

It is a happy number.

It is a super-2 number, since 2×2112212021020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112212020985 and 2112212021003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544382602 + ... + 544386481.

It is an arithmetic number, because the mean of its divisors is an integer number (186723897906).

Almost surely, 2^{2112212021020} is an apocalyptic number.

2112212021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112212021020 is an abundant number, since it is smaller than the sum of its proper divisors (2369161528724).

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

2112212021020 is a wasteful number, since it uses less digits than its factorization.

2112212021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088769189 (or 1088769187 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2112212021020 its reverse (201202122112), we get a palindrome (2313414143132).

The spelling of 2112212021020 in words is "two trillion, one hundred twelve billion, two hundred twelve million, twenty-one thousand, twenty".