2021100220212 has 24 divisors (see below), whose sum is σ = 4843357285536. Its totient is φ = 655491963168.

The previous prime is 2021100220163. The next prime is 2021100220213. The reversal of 2021100220212 is 2120220011202.

It is a super-2 number, since 2×2021100220212² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021100220191 and 2021100220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021100220213) 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, 2276013318 + ... + 2276014205.

It is an arithmetic number, because the mean of its divisors is an integer number (201806553564).

Almost surely, 2^{2021100220212} is an apocalyptic number.

It is an amenable number.

2021100220212 is an abundant number, since it is smaller than the sum of its proper divisors (2822257065324).

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

2021100220212 is a wasteful number, since it uses less digits than its factorization.

2021100220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4552027567 (or 4552027565 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2021100220212 its reverse (2120220011202), we get a palindrome (4141320231414).

The spelling of 2021100220212 in words is "two trillion, twenty-one billion, one hundred million, two hundred twenty thousand, two hundred twelve".