2021100212122 has 8 divisors (see below), whose sum is σ = 3031658911476. Its totient is φ = 1010547241632.

The previous prime is 2021100212071. The next prime is 2021100212137. The reversal of 2021100212122 is 2212120011202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1421390912841 + 599709299281 = 1192221^2 + 774409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2021100212096 and 2021100212105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402033 + ... + 2050324.

Almost surely, 2^{2021100212122} is an apocalyptic number.

2021100212122 is a deficient number, since it is larger than the sum of its proper divisors (1010558699354).

2021100212122 is a wasteful number, since it uses less digits than its factorization.

2021100212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864432.

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

Adding to 2021100212122 its reverse (2212120011202), we get a palindrome (4233220223324).

The spelling of 2021100212122 in words is "two trillion, twenty-one billion, one hundred million, two hundred twelve thousand, one hundred twenty-two".