1002020211121 has 8 divisors (see below), whose sum is σ = 1003033853120. Its totient is φ = 1001006713872.

The previous prime is 1002020211097. The next prime is 1002020211193. The reversal of 1002020211121 is 1211120202001.

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 1002020211121 - 2¹⁷ = 1002020080049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002020214121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18555466 + ... + 18609388.

It is an arithmetic number, because the mean of its divisors is an integer number (125379231640).

Almost surely, 2^{1002020211121} is an apocalyptic number.

It is an amenable number.

1002020211121 is a deficient number, since it is larger than the sum of its proper divisors (1013641999).

1002020211121 is a wasteful number, since it uses less digits than its factorization.

1002020211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72375.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1002020211121 its reverse (1211120202001), we get a palindrome (2213140413122).

The spelling of 1002020211121 in words is "one trillion, two billion, twenty million, two hundred eleven thousand, one hundred twenty-one".