122116545 has 64 divisors (see below), whose sum is σ = 230307840. Its totient is φ = 61262784.

The previous prime is 122116543. The next prime is 122116601. The reversal of 122116545 is 545611221.

122116545 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 1 + 654 + 5 = 666.

It is not a de Polignac number, because 122116545 - 2¹ = 122116543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122116543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 207742 + ... + 208328.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^122116545 is an apocalyptic number.

122116545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122116545 is a deficient number, since it is larger than the sum of its proper divisors (108191295).

122116545 is a wasteful number, since it uses less digits than its factorization.

122116545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 685 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 122116545 is about 11050.6355020877. The cubic root of 122116545 is about 496.1254465585.

Adding to 122116545 its reverse (545611221), we get a palindrome (667727766).

It can be divided in two parts, 1221 and 16545, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 122116545 in words is "one hundred twenty-two million, one hundred sixteen thousand, five hundred forty-five".