221525233371342 has 48 divisors (see below), whose sum is σ = 505274556892560. Its totient is φ = 69949581215616.

The previous prime is 221525233371329. The next prime is 221525233371347. The reversal of 221525233371342 is 243173332525122.

221525233371342 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 2 + 5 + 233 + 3 + 71 + 342 = 666.

221525233371342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221525233371347) 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, 22482703 + ... + 30798090.

It is an arithmetic number, because the mean of its divisors is an integer number (10526553268595).

Almost surely, 2^{221525233371342} is an apocalyptic number.

221525233371342 is an abundant number, since it is smaller than the sum of its proper divisors (283749323521218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221525233371342 is a wasteful number, since it uses less digits than its factorization.

221525233371342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53292977 (or 53292974 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

Adding to 221525233371342 its reverse (243173332525122), we get a palindrome (464698565896464).

The spelling of 221525233371342 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, two hundred thirty-three million, three hundred seventy-one thousand, three hundred forty-two".