242223572521 has 8 divisors (see below), whose sum is σ = 277098081344. Its totient is φ = 207416849040.

The previous prime is 242223572483. The next prime is 242223572537. The reversal of 242223572521 is 125275322242.

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 242223572521 - 2²³ = 242215183913 is a prime.

It is a super-2 number, since 2×242223572521² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242223572621) 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, 16938675 + ... + 16952968.

It is an arithmetic number, because the mean of its divisors is an integer number (34637260168).

Almost surely, 2^242223572521 is an apocalyptic number.

It is an amenable number.

242223572521 is a deficient number, since it is larger than the sum of its proper divisors (34874508823).

242223572521 is a wasteful number, since it uses less digits than its factorization.

242223572521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33892671.

The product of its digits is 134400, while the sum is 37.

Adding to 242223572521 its reverse (125275322242), we get a palindrome (367498894763).

The spelling of 242223572521 in words is "two hundred forty-two billion, two hundred twenty-three million, five hundred seventy-two thousand, five hundred twenty-one".