1002201121 has 8 divisors (see below), whose sum is σ = 1005490944. Its totient is φ = 998917920.

The previous prime is 1002201097. The next prime is 1002201127. The reversal of 1002201121 is 1211022001.

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 1002201121 - 2¹³ = 1002192929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002201098 and 1002201107.

It is not an unprimeable number, because it can be changed into a prime (1002201127) 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, 561196 + ... + 562978.

It is an arithmetic number, because the mean of its divisors is an integer number (125686368).

Almost surely, 2^1002201121 is an apocalyptic number.

It is an amenable number.

1002201121 is a deficient number, since it is larger than the sum of its proper divisors (3289823).

1002201121 is an equidigital number, since it uses as much as digits as its factorization.

1002201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311.

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

The square root of 1002201121 is about 31657.5602502783. The cubic root of 1002201121 is about 1000.7331693314.

Adding to 1002201121 its reverse (1211022001), we get a palindrome (2213223122).

The spelling of 1002201121 in words is "one billion, two million, two hundred one thousand, one hundred twenty-one".