240222021 has 8 divisors (see below), whose sum is σ = 344934240. Its totient is φ = 147828912.

The previous prime is 240221999. The next prime is 240222043. The reversal of 240222021 is 120222042.

It is an interprime number because it is at equal distance from previous prime (240221999) and next prime (240222043).

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

It is not a de Polignac number, because 240222021 - 2⁶ = 240221957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240222221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3079731 + ... + 3079808.

It is an arithmetic number, because the mean of its divisors is an integer number (43116780).

Almost surely, 2^240222021 is an apocalyptic number.

It is an amenable number.

240222021 is a deficient number, since it is larger than the sum of its proper divisors (104712219).

240222021 is a wasteful number, since it uses less digits than its factorization.

240222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159555.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 240222021 is about 15499.0974253342. The cubic root of 240222021 is about 621.6380729261.

Adding to 240222021 its reverse (120222042), we get a palindrome (360444063).

The spelling of 240222021 in words is "two hundred forty million, two hundred twenty-two thousand, twenty-one".