356550601221 has 64 divisors (see below), whose sum is σ = 548403609600. Its totient is φ = 228805492608.

The previous prime is 356550601189. The next prime is 356550601229. The reversal of 356550601221 is 122106055653.

356550601221 is a `hidden beast` number, since 3 + 565 + 5 + 0 + 60 + 12 + 21 = 666.

It is not a de Polignac number, because 356550601221 - 2⁵ = 356550601189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356550601229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22100860 + ... + 22116986.

It is an arithmetic number, because the mean of its divisors is an integer number (8568806400).

Almost surely, 2^356550601221 is an apocalyptic number.

It is an amenable number.

356550601221 is a deficient number, since it is larger than the sum of its proper divisors (191853008379).

356550601221 is a wasteful number, since it uses less digits than its factorization.

356550601221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16455 (or 16449 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 356550601221 its reverse (122106055653), we get a palindrome (478656656874).

The spelling of 356550601221 in words is "three hundred fifty-six billion, five hundred fifty million, six hundred one thousand, two hundred twenty-one".