2321022420 has 72 divisors (see below), whose sum is σ = 7110197640. Its totient is φ = 612806400.

The previous prime is 2321022419. The next prime is 2321022433. The reversal of 2321022420 is 242201232.

2321022420 is a `hidden beast` number, since 232 + 10 + 2 + 2 + 420 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 770395536 + 1550626884 = 27756^2 + 39378^2 .

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 = 2321022393 and 2321022402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45655 + ... + 82014.

It is an arithmetic number, because the mean of its divisors is an integer number (98752745).

Almost surely, 2^2321022420 is an apocalyptic number.

2321022420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2321022420 is an abundant number, since it is smaller than the sum of its proper divisors (4789175220).

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

2321022420 is a wasteful number, since it uses less digits than its factorization.

2321022420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127785 (or 127780 counting only the distinct ones).

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

The square root of 2321022420 is about 48176.9905660368. The cubic root of 2321022420 is about 1324.0156296169.

Adding to 2321022420 its reverse (242201232), we get a palindrome (2563223652).

The spelling of 2321022420 in words is "two billion, three hundred twenty-one million, twenty-two thousand, four hundred twenty".