1002022011021 has 4 divisors (see below), whose sum is σ = 1336029348032. Its totient is φ = 668014674012.

The previous prime is 1002022011007. The next prime is 1002022011037. The reversal of 1002022011021 is 1201102202001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1002022011021 - 2¹⁰ = 1002022009997 is a prime.

It is a super-2 number, since 2×1002022011021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002022010988 and 1002022011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002022019021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167003668501 + ... + 167003668506.

It is an arithmetic number, because the mean of its divisors is an integer number (334007337008).

Almost surely, 2^{1002022011021} is an apocalyptic number.

It is an amenable number.

1002022011021 is a deficient number, since it is larger than the sum of its proper divisors (334007337011).

1002022011021 is an equidigital number, since it uses as much as digits as its factorization.

1002022011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334007337010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1002022011021 its reverse (1201102202001), we get a palindrome (2203124213022).

The spelling of 1002022011021 in words is "one trillion, two billion, twenty-two million, eleven thousand, twenty-one".