2220521424 has 40 divisors (see below), whose sum is σ = 6257834592. Its totient is φ = 672885120.

The previous prime is 2220521383. The next prime is 2220521489. The reversal of 2220521424 is 4241250222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 2220521394 and 2220521403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2102239 + ... + 2103294.

Almost surely, 2^2220521424 is an apocalyptic number.

2220521424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2220521424 is an abundant number, since it is smaller than the sum of its proper divisors (4037313168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2220521424 is a wasteful number, since it uses less digits than its factorization.

2220521424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205555 (or 4205549 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2220521424 is about 47122.4089367256. The cubic root of 2220521424 is about 1304.6228754228.

Adding to 2220521424 its reverse (4241250222), we get a palindrome (6461771646).

The spelling of 2220521424 in words is "two billion, two hundred twenty million, five hundred twenty-one thousand, four hundred twenty-four".