2002221221021 has 8 divisors (see below), whose sum is σ = 2292072950400. Its totient is φ = 1713324523248.

The previous prime is 2002221220991. The next prime is 2002221221023. The reversal of 2002221221021 is 1201221222002.

It is a happy number.

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 2002221221021 - 2¹⁴ = 2002221204637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002221221023) 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, 238753406 + ... + 238761791.

It is an arithmetic number, because the mean of its divisors is an integer number (286509118800).

Almost surely, 2^{2002221221021} is an apocalyptic number.

It is an amenable number.

2002221221021 is a deficient number, since it is larger than the sum of its proper divisors (289851729379).

2002221221021 is an equidigital number, since it uses as much as digits as its factorization.

2002221221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477515803.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2002221221021 its reverse (1201221222002), we get a palindrome (3203442443023).

The spelling of 2002221221021 in words is "two trillion, two billion, two hundred twenty-one million, two hundred twenty-one thousand, twenty-one".