3021222420 has 72 divisors (see below), whose sum is σ = 9412081224. Its totient is φ = 783883008.

The previous prime is 3021222367. The next prime is 3021222437. The reversal of 3021222420 is 242221203.

3021222420 is a `hidden beast` number, since 3 + 0 + 21 + 222 + 420 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1255710096 + 1765512324 = 35436^2 + 42018^2 .

It is a super-2 number, since 2×3021222420² = 18255569822221312800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3021222393 and 3021222402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220159 + ... + 233478.

Almost surely, 2^3021222420 is an apocalyptic number.

3021222420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3021222420 is an abundant number, since it is smaller than the sum of its proper divisors (6390858804).

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

3021222420 is a wasteful number, since it uses less digits than its factorization.

3021222420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453689 (or 453684 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3021222420 is about 54965.6476355915. The cubic root of 3021222420 is about 1445.6424740069.

Adding to 3021222420 its reverse (242221203), we get a palindrome (3263443623).

The spelling of 3021222420 in words is "three billion, twenty-one million, two hundred twenty-two thousand, four hundred twenty".