242570307221 has 4 divisors (see below), whose sum is σ = 264622153344. Its totient is φ = 220518461100.

The previous prime is 242570307209. The next prime is 242570307227. The reversal of 242570307221 is 122703075242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242570307221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242570307227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11025923045 + ... + 11025923066.

It is an arithmetic number, because the mean of its divisors is an integer number (66155538336).

Almost surely, 2^242570307221 is an apocalyptic number.

It is an amenable number.

242570307221 is a deficient number, since it is larger than the sum of its proper divisors (22051846123).

242570307221 is a wasteful number, since it uses less digits than its factorization.

242570307221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22051846122.

The product of its (nonzero) digits is 47040, while the sum is 35.

The spelling of 242570307221 in words is "two hundred forty-two billion, five hundred seventy million, three hundred seven thousand, two hundred twenty-one".