2221033124421 has 6 divisors (see below), whose sum is σ = 3208158957510. Its totient is φ = 1480688749608.

The previous prime is 2221033124419. The next prime is 2221033124449. The reversal of 2221033124421 is 1244213301222.

2221033124421 is a `hidden beast` number, since 2 + 2 + 210 + 3 + 3 + 1 + 2 + 442 + 1 = 666.

2221033124421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1957131050625 + 263902073796 = 1398975^2 + 513714^2 .

It is not a de Polignac number, because 2221033124421 - 2¹ = 2221033124419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221033126421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123390729126 + ... + 123390729143.

It is an arithmetic number, because the mean of its divisors is an integer number (534693159585).

Almost surely, 2^{2221033124421} is an apocalyptic number.

It is an amenable number.

2221033124421 is a deficient number, since it is larger than the sum of its proper divisors (987125833089).

2221033124421 is a wasteful number, since it uses less digits than its factorization.

2221033124421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246781458275 (or 246781458272 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 2221033124421 its reverse (1244213301222), we get a palindrome (3465246425643).

The spelling of 2221033124421 in words is "two trillion, two hundred twenty-one billion, thirty-three million, one hundred twenty-four thousand, four hundred twenty-one".