2221011212021 has 8 divisors (see below), whose sum is σ = 2590100539200. Its totient is φ = 1903723895724.

The previous prime is 2221011212003. The next prime is 2221011212059. The reversal of 2221011212021 is 1202121101222.

2221011212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221011212021 - 2⁶ = 2221011211957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221011212081) 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, 3237625331 + ... + 3237626016.

It is an arithmetic number, because the mean of its divisors is an integer number (323762567400).

Almost surely, 2^{2221011212021} is an apocalyptic number.

It is an amenable number.

2221011212021 is a deficient number, since it is larger than the sum of its proper divisors (369089327179).

2221011212021 is an frugal number, since it uses more digits than its factorization.

2221011212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475251368 (or 6475251354 counting only the distinct ones).

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

Adding to 2221011212021 its reverse (1202121101222), we get a palindrome (3423132313243).

The spelling of 2221011212021 in words is "two trillion, two hundred twenty-one billion, eleven million, two hundred twelve thousand, twenty-one".