2205215402421 has 8 divisors (see below), whose sum is σ = 2940606524160. Its totient is φ = 1469983941152.

The previous prime is 2205215402381. The next prime is 2205215402449. The reversal of 2205215402421 is 1242045125022.

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 2205215402421 - 2¹⁵ = 2205215369653 is a prime.

It is a super-2 number, since 2×2205215402421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205215402321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39882885 + ... + 39938138.

It is an arithmetic number, because the mean of its divisors is an integer number (367575815520).

Almost surely, 2^{2205215402421} is an apocalyptic number.

It is an amenable number.

2205215402421 is a deficient number, since it is larger than the sum of its proper divisors (735391121739).

2205215402421 is an equidigital number, since it uses as much as digits as its factorization.

2205215402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79830235.

The product of its (nonzero) digits is 12800, while the sum is 30.

The spelling of 2205215402421 in words is "two trillion, two hundred five billion, two hundred fifteen million, four hundred two thousand, four hundred twenty-one".