122212545 has 32 divisors (see below), whose sum is σ = 240667392. Its totient is φ = 51570432.

The previous prime is 122212543. The next prime is 122212577. The reversal of 122212545 is 545212221.

It is not a de Polignac number, because 122212545 - 2¹ = 122212543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122212543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43402 + ... + 46131.

It is an arithmetic number, because the mean of its divisors is an integer number (7520856).

Almost surely, 2^122212545 is an apocalyptic number.

122212545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122212545 is a deficient number, since it is larger than the sum of its proper divisors (118454847).

122212545 is a wasteful number, since it uses less digits than its factorization.

122212545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89561.

The product of its digits is 1600, while the sum is 24.

The square root of 122212545 is about 11054.9782903450. The cubic root of 122212545 is about 496.2554195763.

Adding to 122212545 its reverse (545212221), we get a palindrome (667424766).

The spelling of 122212545 in words is "one hundred twenty-two million, two hundred twelve thousand, five hundred forty-five".