2221010001021 has 16 divisors (see below), whose sum is σ = 3384579340800. Its totient is φ = 1269079891248.

The previous prime is 2221010000999. The next prime is 2221010001031. The reversal of 2221010001021 is 1201000101222.

It is not a de Polignac number, because 2221010001021 - 2¹⁰ = 2221009999997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221010000988 and 2221010001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221010001031) 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 15 ways as a sum of consecutive naturals, for example, 2463111 + ... + 3241748.

It is an arithmetic number, because the mean of its divisors is an integer number (211536208800).

Almost surely, 2^{2221010001021} is an apocalyptic number.

2221010001021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2221010001021 is a deficient number, since it is larger than the sum of its proper divisors (1163569339779).

2221010001021 is a wasteful number, since it uses less digits than its factorization.

2221010001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5723408.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2221010001021 its reverse (1201000101222), we get a palindrome (3422010102243).

The spelling of 2221010001021 in words is "two trillion, two hundred twenty-one billion, ten million, one thousand, twenty-one".