1002211001 has 8 divisors (see below), whose sum is σ = 1093569984. Its totient is φ = 910893520.

The previous prime is 1002210983. The next prime is 1002211003. The reversal of 1002211001 is 1001122001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002211001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002211001.

It is not an unprimeable number, because it can be changed into a prime (1002211003) 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, 62276 + ... + 76698.

It is an arithmetic number, because the mean of its divisors is an integer number (136696248).

Almost surely, 2^1002211001 is an apocalyptic number.

1002211001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002211001 is a deficient number, since it is larger than the sum of its proper divisors (91358983).

1002211001 is a wasteful number, since it uses less digits than its factorization.

1002211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20751.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1002211001 is about 31657.7162947677. The cubic root of 1002211001 is about 1000.7364578301.

Adding to 1002211001 its reverse (1001122001), we get a palindrome (2003333002).

The spelling of 1002211001 in words is "one billion, two million, two hundred eleven thousand, one".