2221021011021 has 32 divisors (see below), whose sum is σ = 2976965924352. Its totient is φ = 1472905736640.

The previous prime is 2221021010981. The next prime is 2221021011029. The reversal of 2221021011021 is 1201101201222.

It is not a de Polignac number, because 2221021011021 - 2¹⁰ = 2221021009997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221021011029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1066259646 + ... + 1066261728.

It is an arithmetic number, because the mean of its divisors is an integer number (93030185136).

Almost surely, 2^{2221021011021} is an apocalyptic number.

It is an amenable number.

2221021011021 is a deficient number, since it is larger than the sum of its proper divisors (755944913331).

2221021011021 is a wasteful number, since it uses less digits than its factorization.

2221021011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2221021011021 its reverse (1201101201222), we get a palindrome (3422122212243).

The spelling of 2221021011021 in words is "two trillion, two hundred twenty-one billion, twenty-one million, eleven thousand, twenty-one".