220135305122550 has 72 divisors (see below), whose sum is σ = 607414786108416. Its totient is φ = 57116187270720.

The previous prime is 220135305122533. The next prime is 220135305122563. The reversal of 220135305122550 is 55221503531022.

220135305122550 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 3 + 5 + 30 + 51 + 22 + 550 = 666.

220135305122550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×220135305122550³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6610653174 + ... + 6610686473.

It is an arithmetic number, because the mean of its divisors is an integer number (8436316473728).

Almost surely, 2^{220135305122550} is an apocalyptic number.

220135305122550 is an abundant number, since it is smaller than the sum of its proper divisors (387279480985866).

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

220135305122550 is a wasteful number, since it uses less digits than its factorization.

220135305122550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13221339702 (or 13221339694 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 220135305122550 its reverse (55221503531022), we get a palindrome (275356808653572).

The spelling of 220135305122550 in words is "two hundred twenty trillion, one hundred thirty-five billion, three hundred five million, one hundred twenty-two thousand, five hundred fifty".