1002211001010 has 48 divisors (see below), whose sum is σ = 2605940265240. Its totient is φ = 267236609280.

The previous prime is 1002211001009. The next prime is 1002211001017. The reversal of 1002211001010 is 101001122001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 256279950081 + 745931050929 = 506241^2 + 863673^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1002211000983 and 1002211001001.

It is not an unprimeable number, because it can be changed into a prime (1002211001017) 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 23 ways as a sum of consecutive naturals, for example, 841990 + ... + 1647230.

Almost surely, 2^{1002211001010} is an apocalyptic number.

1002211001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002211001010 is an abundant number, since it is smaller than the sum of its proper divisors (1603729264230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002211001010 is a wasteful number, since it uses less digits than its factorization.

1002211001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819083 (or 819080 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1002211001010 its reverse (101001122001), we get a palindrome (1103212123011).

The spelling of 1002211001010 in words is "one trillion, two billion, two hundred eleven million, one thousand, ten".