1002211031021 has 4 divisors (see below), whose sum is σ = 1002214729344. Its totient is φ = 1002207332700.

The previous prime is 1002211030993. The next prime is 1002211031093. The reversal of 1002211031021 is 1201301122001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002211031021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002211030987 and 1002211031005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002211031321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407515 + ... + 1996376.

It is an arithmetic number, because the mean of its divisors is an integer number (250553682336).

Almost surely, 2^{1002211031021} is an apocalyptic number.

It is an amenable number.

1002211031021 is a deficient number, since it is larger than the sum of its proper divisors (3698323).

1002211031021 is an equidigital number, since it uses as much as digits as its factorization.

1002211031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698322.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1002211031021 its reverse (1201301122001), we get a palindrome (2203512153022).

The spelling of 1002211031021 in words is "one trillion, two billion, two hundred eleven million, thirty-one thousand, twenty-one".