2002111221021 has 8 divisors (see below), whose sum is σ = 2675822441184. Its totient is φ = 1331570407440.

The previous prime is 2002111221013. The next prime is 2002111221023. The reversal of 2002111221021 is 1201221112002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2002111221021 - 2³ = 2002111221013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002111221023) 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, 792600171 + ... + 792602696.

It is an arithmetic number, because the mean of its divisors is an integer number (334477805148).

Almost surely, 2^{2002111221021} is an apocalyptic number.

It is an amenable number.

2002111221021 is a deficient number, since it is larger than the sum of its proper divisors (673711220163).

2002111221021 is a wasteful number, since it uses less digits than its factorization.

2002111221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585203291.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2002111221021 its reverse (1201221112002), we get a palindrome (3203332333023).

The spelling of 2002111221021 in words is "two trillion, two billion, one hundred eleven million, two hundred twenty-one thousand, twenty-one".