221455255140135 has 24 divisors (see below), whose sum is σ = 383856347902560. Its totient is φ = 118109293307712.

The previous prime is 221455255140127. The next prime is 221455255140239. The reversal of 221455255140135 is 531041552554122.

221455255140135 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 5 + 52 + 551 + 40 + 1 + 3 + 5 = 666.

It is not a de Polignac number, because 221455255140135 - 2³ = 221455255140127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30305046 + ... + 36895884.

It is an arithmetic number, because the mean of its divisors is an integer number (15994014495940).

Almost surely, 2^{221455255140135} is an apocalyptic number.

221455255140135 is a deficient number, since it is larger than the sum of its proper divisors (162401092762425).

221455255140135 is a wasteful number, since it uses less digits than its factorization.

221455255140135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7337527 (or 7337524 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 45.

The spelling of 221455255140135 in words is "two hundred twenty-one trillion, four hundred fifty-five billion, two hundred fifty-five million, one hundred forty thousand, one hundred thirty-five".