1002211021 has 8 divisors (see below), whose sum is σ = 1145718080. Its totient is φ = 858787488.

The previous prime is 1002211003. The next prime is 1002211027. The reversal of 1002211021 is 1201122001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002211021 - 2⁷ = 1002210893 is a prime.

It is a super-2 number, since 2×1002211021² = 2008853861227724882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002210989 and 1002211007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002211027) 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, 7390 + ... + 45376.

It is an arithmetic number, because the mean of its divisors is an integer number (143214760).

Almost surely, 2^1002211021 is an apocalyptic number.

It is an amenable number.

1002211021 is a deficient number, since it is larger than the sum of its proper divisors (143507059).

1002211021 is an equidigital number, since it uses as much as digits as its factorization.

1002211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41763.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1002211021 is about 31657.7166106464. The cubic root of 1002211021 is about 1000.7364644869.

Adding to 1002211021 its reverse (1201122001), we get a palindrome (2203333022).

The spelling of 1002211021 in words is "one billion, two million, two hundred eleven thousand, twenty-one".