2220042575421 has 36 divisors (see below), whose sum is σ = 3531676528380. Its totient is φ = 1342836633600.

The previous prime is 2220042575371. The next prime is 2220042575423. The reversal of 2220042575421 is 1245752400222.

2220042575421 is a `hidden beast` number, since 2 + 2 + 2 + 0 + 0 + 42 + 575 + 42 + 1 = 666.

2220042575421 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 2 ways, for example, as 1113046100100 + 1106996475321 = 1055010^2 + 1052139^2 .

It is not a de Polignac number, because 2220042575421 - 2⁶ = 2220042575357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220042575423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1448260 + ... + 2556861.

Almost surely, 2^{2220042575421} is an apocalyptic number.

It is an amenable number.

2220042575421 is a deficient number, since it is larger than the sum of its proper divisors (1311633952959).

2220042575421 is a wasteful number, since it uses less digits than its factorization.

2220042575421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005658 (or 4005644 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 36.

Adding to 2220042575421 its reverse (1245752400222), we get a palindrome (3465794975643).

The spelling of 2220042575421 in words is "two trillion, two hundred twenty billion, forty-two million, five hundred seventy-five thousand, four hundred twenty-one".