2021222401 has 8 divisors (see below), whose sum is σ = 2205417600. Its totient is φ = 1837101840.

The previous prime is 2021222393. The next prime is 2021222407. The reversal of 2021222401 is 1042221202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021222401 - 2³ = 2021222393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021222407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48495 + ... + 79963.

It is an arithmetic number, because the mean of its divisors is an integer number (275677200).

Almost surely, 2^2021222401 is an apocalyptic number.

It is an amenable number.

2021222401 is a deficient number, since it is larger than the sum of its proper divisors (184195199).

2021222401 is a wasteful number, since it uses less digits than its factorization.

2021222401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37319.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2021222401 is about 44958.0070843893. The cubic root of 2021222401 is about 1264.3618044506.

Adding to 2021222401 its reverse (1042221202), we get a palindrome (3063443603).

It can be divided in two parts, 2021 and 222401, that added together give a palindrome (224422).

The spelling of 2021222401 in words is "two billion, twenty-one million, two hundred twenty-two thousand, four hundred one".