1002211101021 has 16 divisors (see below), whose sum is σ = 1439278588160. Its totient is φ = 616656905280.

The previous prime is 1002211101019. The next prime is 1002211101049. The reversal of 1002211101021 is 1201011122001.

It is not a de Polignac number, because 1002211101021 - 2¹ = 1002211101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002211100988 and 1002211101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002211101061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1565266 + ... + 2110563.

It is an arithmetic number, because the mean of its divisors is an integer number (89954911760).

Almost surely, 2^{1002211101021} is an apocalyptic number.

It is an amenable number.

1002211101021 is a deficient number, since it is larger than the sum of its proper divisors (437067487139).

1002211101021 is a wasteful number, since it uses less digits than its factorization.

1002211101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682836.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1002211101021 its reverse (1201011122001), we get a palindrome (2203222223022).

The spelling of 1002211101021 in words is "one trillion, two billion, two hundred eleven million, one hundred one thousand, twenty-one".