1002201021011 has 4 divisors (see below), whose sum is σ = 1003003425000. Its totient is φ = 1001398617024.

The previous prime is 1002201020881. The next prime is 1002201021047. The reversal of 1002201021011 is 1101201022001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002201021011 - 2¹⁰ = 1002201019987 is a prime.

It is a super-4 number, since 4×1002201021011⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002201020983 and 1002201021001.

It is not an unprimeable number, because it can be changed into a prime (1002201021061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401200121 + ... + 401202618.

It is an arithmetic number, because the mean of its divisors is an integer number (250750856250).

Almost surely, 2^{1002201021011} is an apocalyptic number.

1002201021011 is a deficient number, since it is larger than the sum of its proper divisors (802403989).

1002201021011 is an equidigital number, since it uses as much as digits as its factorization.

1002201021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802403988.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1002201021011 its reverse (1101201022001), we get a palindrome (2103402043012).

The spelling of 1002201021011 in words is "one trillion, two billion, two hundred one million, twenty-one thousand, eleven".