221677052234542 has 8 divisors (see below), whose sum is σ = 332515706783832. Its totient is φ = 110838483306600.

The previous prime is 221677052234531. The next prime is 221677052234543. The reversal of 221677052234542 is 245432250776122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221677052234542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221677052234543) 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, 14485309 + ... + 25557352.

It is an arithmetic number, because the mean of its divisors is an integer number (41564463347979).

Almost surely, 2^{221677052234542} is an apocalyptic number.

221677052234542 is a deficient number, since it is larger than the sum of its proper divisors (110838654549290).

221677052234542 is a wasteful number, since it uses less digits than its factorization.

221677052234542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42810674.

The product of its (nonzero) digits is 11289600, while the sum is 52.

The spelling of 221677052234542 in words is "two hundred twenty-one trillion, six hundred seventy-seven billion, fifty-two million, two hundred thirty-four thousand, five hundred forty-two".