122011506 has 12 divisors (see below), whose sum is σ = 264358302. Its totient is φ = 40670496.

The previous prime is 122011423. The next prime is 122011507. The reversal of 122011506 is 605110221.

It can be written as a sum of positive squares in only one way, i.e., 120890025 + 1121481 = 10995^2 + 1059^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6778417 = 122011506 / (1 + 2 + 2 + 0 + 1 + 1 + 5 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (122011507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3389191 + ... + 3389226.

Almost surely, 2^122011506 is an apocalyptic number.

122011506 is an abundant number, since it is smaller than the sum of its proper divisors (142346796).

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

122011506 is a wasteful number, since it uses less digits than its factorization.

122011506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778425 (or 6778422 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 122011506 is about 11045.8818570542. The cubic root of 122011506 is about 495.9831577051.

Adding to 122011506 its reverse (605110221), we get a palindrome (727121727).

The spelling of 122011506 in words is "one hundred twenty-two million, eleven thousand, five hundred six".