2206421646404 has 24 divisors (see below), whose sum is σ = 4118211651960. Its totient is φ = 1030737115136.

The previous prime is 2206421646343. The next prime is 2206421646431. The reversal of 2206421646404 is 4046461246022.

It can be written as a sum of positive squares in 4 ways, for example, as 89280244804 + 2117141401600 = 298798^2 + 1455040^2 .

It is a super-2 number, since 2×2206421646404² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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, 118411769 + ... + 118430400.

It is an arithmetic number, because the mean of its divisors is an integer number (171592152165).

Almost surely, 2^{2206421646404} is an apocalyptic number.

It is an amenable number.

2206421646404 is a deficient number, since it is larger than the sum of its proper divisors (1911790005556).

2206421646404 is a wasteful number, since it uses less digits than its factorization.

2206421646404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236842327 (or 236842325 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 2206421646404 in words is "two trillion, two hundred six billion, four hundred twenty-one million, six hundred forty-six thousand, four hundred four".