2021122221011 has 8 divisors (see below), whose sum is σ = 2026577324544. Its totient is φ = 2015668045440.

The previous prime is 2021122220989. The next prime is 2021122221017. The reversal of 2021122221011 is 1101222211202.

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

It is a cyclic number.

It is not a de Polignac number, because 2021122221011 - 2²⁶ = 2021055112147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021122221017) 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, 4246331 + ... + 4698251.

It is an arithmetic number, because the mean of its divisors is an integer number (253322165568).

Almost surely, 2^{2021122221011} is an apocalyptic number.

2021122221011 is a deficient number, since it is larger than the sum of its proper divisors (5455103533).

2021122221011 is a wasteful number, since it uses less digits than its factorization.

2021122221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463981.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2021122221011 its reverse (1101222211202), we get a palindrome (3122344432213).

The spelling of 2021122221011 in words is "two trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, eleven".