2021100220012 has 48 divisors (see below), whose sum is σ = 3807640357920. Its totient is φ = 935202585600.

The previous prime is 2021100220003. The next prime is 2021100220049. The reversal of 2021100220012 is 2100220011202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2021100219974 and 2021100220001.

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, 12617439 + ... + 12776617.

It is an arithmetic number, because the mean of its divisors is an integer number (79325840790).

Almost surely, 2^{2021100220012} is an apocalyptic number.

It is an amenable number.

2021100220012 is a deficient number, since it is larger than the sum of its proper divisors (1786540137908).

2021100220012 is a wasteful number, since it uses less digits than its factorization.

2021100220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162322 (or 162320 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2021100220012 its reverse (2100220011202), we get a palindrome (4121320231214).

The spelling of 2021100220012 in words is "two trillion, twenty-one billion, one hundred million, two hundred twenty thousand, twelve".