2222121202021 has 8 divisors (see below), whose sum is σ = 2543591763584. Its totient is φ = 1901656809360.

The previous prime is 2222121202003. The next prime is 2222121202033. The reversal of 2222121202021 is 1202021212222.

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

It is not a de Polignac number, because 2222121202021 - 2¹³ = 2222121193829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2222121202021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222121202001) 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, 251537490 + ... + 251546323.

It is an arithmetic number, because the mean of its divisors is an integer number (317948970448).

Almost surely, 2^{2222121202021} is an apocalyptic number.

It is an amenable number.

2222121202021 is a deficient number, since it is larger than the sum of its proper divisors (321470561563).

2222121202021 is an equidigital number, since it uses as much as digits as its factorization.

2222121202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503084451.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2222121202021 its reverse (1202021212222), we get a palindrome (3424142414243).

The spelling of 2222121202021 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred two thousand, twenty-one".