2243403443421 has 64 divisors (see below), whose sum is σ = 3886084477440. Its totient is φ = 1252536929280.

The previous prime is 2243403443377. The next prime is 2243403443483. The reversal of 2243403443421 is 1243443043422.

2243403443421 is a `hidden beast` number, since 2 + 243 + 40 + 34 + 4 + 342 + 1 = 666.

2243403443421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2243403443421 - 2⁶ = 2243403443357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243403443221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1949451 + ... + 2878743.

It is an arithmetic number, because the mean of its divisors is an integer number (60720069960).

Almost surely, 2^{2243403443421} is an apocalyptic number.

2243403443421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2243403443421 is a deficient number, since it is larger than the sum of its proper divisors (1642681034019).

2243403443421 is a wasteful number, since it uses less digits than its factorization.

2243403443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929603 (or 929597 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 2243403443421 its reverse (1243443043422), we get a palindrome (3486846486843).

The spelling of 2243403443421 in words is "two trillion, two hundred forty-three billion, four hundred three million, four hundred forty-three thousand, four hundred twenty-one".