255353210122221 has 48 divisors (see below), whose sum is σ = 405260512360704. Its totient is φ = 160120404025344.

The previous prime is 255353210122147. The next prime is 255353210122277. The reversal of 255353210122221 is 122221012353552.

255353210122221 is a `hidden beast` number, since 2 + 5 + 53 + 53 + 210 + 122 + 221 = 666.

It is not a de Polignac number, because 255353210122221 - 2¹⁴ = 255353210105837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255353210122421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12984916 + ... + 26063661.

It is an arithmetic number, because the mean of its divisors is an integer number (8442927340848).

Almost surely, 2^{255353210122221} is an apocalyptic number.

It is an amenable number.

255353210122221 is a deficient number, since it is larger than the sum of its proper divisors (149907302238483).

255353210122221 is a wasteful number, since it uses less digits than its factorization.

255353210122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39050192 (or 39050180 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 255353210122221 its reverse (122221012353552), we get a palindrome (377574222475773).

The spelling of 255353210122221 in words is "two hundred fifty-five trillion, three hundred fifty-three billion, two hundred ten million, one hundred twenty-two thousand, two hundred twenty-one".