1002221011 has 8 divisors (see below), whose sum is σ = 1097198784. Its totient is φ = 907887720.

The previous prime is 1002220991. The next prime is 1002221027. The reversal of 1002221011 is 1101222001.

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 1002221011 - 2¹⁹ = 1001696723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1002221071) 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, 157861 + ... + 164086.

It is an arithmetic number, because the mean of its divisors is an integer number (137149848).

Almost surely, 2^1002221011 is an apocalyptic number.

1002221011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1002221011 is a deficient number, since it is larger than the sum of its proper divisors (94977773).

1002221011 is a wasteful number, since it uses less digits than its factorization.

1002221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322241.

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

The square root of 1002221011 is about 31657.8743916897. The cubic root of 1002221011 is about 1000.7397895764.

Adding to 1002221011 its reverse (1101222001), we get a palindrome (2103443012).

The spelling of 1002221011 in words is "one billion, two million, two hundred twenty-one thousand, eleven".