2202121021 has 8 divisors (see below), whose sum is σ = 2213965280. Its totient is φ = 2190296592.

The previous prime is 2202121001. The next prime is 2202121067. The reversal of 2202121021 is 1201212022.

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 2202121021 - 2⁵ = 2202120989 is a prime.

It is a super-2 number, since 2×2202121021² = 9698673982260164882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2202120992 and 2202121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202121001) 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, 252886 + ... + 261448.

It is an arithmetic number, because the mean of its divisors is an integer number (276745660).

Almost surely, 2^2202121021 is an apocalyptic number.

It is an amenable number.

2202121021 is a deficient number, since it is larger than the sum of its proper divisors (11844259).

2202121021 is a wasteful number, since it uses less digits than its factorization.

2202121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9915.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2202121021 is about 46926.7623110736. The cubic root of 2202121021 is about 1301.0092795376.

Adding to 2202121021 its reverse (1201212022), we get a palindrome (3403333043).

The spelling of 2202121021 in words is "two billion, two hundred two million, one hundred twenty-one thousand, twenty-one".