122054543505 has 12 divisors (see below), whose sum is σ = 211561208820. Its totient is φ = 65095756512.

The previous prime is 122054543497. The next prime is 122054543581. The reversal of 122054543505 is 505345450221.

122054543505 is a `hidden beast` number, since 1 + 2 + 20 + 545 + 43 + 50 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56686371921 + 65368171584 = 238089^2 + 255672^2 .

It is not a de Polignac number, because 122054543505 - 2³ = 122054543497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122054543505.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1356161550 + ... + 1356161639.

It is an arithmetic number, because the mean of its divisors is an integer number (17630100735).

Almost surely, 2^122054543505 is an apocalyptic number.

122054543505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122054543505 is a deficient number, since it is larger than the sum of its proper divisors (89506665315).

122054543505 is a wasteful number, since it uses less digits than its factorization.

122054543505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712323200 (or 2712323197 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 122054543505 its reverse (505345450221), we get a palindrome (627399993726).

The spelling of 122054543505 in words is "one hundred twenty-two billion, fifty-four million, five hundred forty-three thousand, five hundred five".