268422021 has 24 divisors (see below), whose sum is σ = 450379904. Its totient is φ = 150867360.

The previous prime is 268422001. The next prime is 268422023. The reversal of 268422021 is 120224862.

It is a happy number.

It is not a de Polignac number, because 268422021 - 2⁹ = 268421509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268422023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31081 + ... + 38766.

Almost surely, 2^268422021 is an apocalyptic number.

268422021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

268422021 is a deficient number, since it is larger than the sum of its proper divisors (181957883).

268422021 is a wasteful number, since it uses less digits than its factorization.

268422021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69921 (or 69918 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 268422021 is about 16383.5899912077. The cubic root of 268422021 is about 645.0688154449.

Adding to 268422021 its reverse (120224862), we get a palindrome (388646883).

The spelling of 268422021 in words is "two hundred sixty-eight million, four hundred twenty-two thousand, twenty-one".