122106156 has 12 divisors (see below), whose sum is σ = 284914392. Its totient is φ = 40702048.

The previous prime is 122106139. The next prime is 122106157. The reversal of 122106156 is 651601221.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (122106157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5087745 + ... + 5087768.

It is an arithmetic number, because the mean of its divisors is an integer number (23742866).

Almost surely, 2^122106156 is an apocalyptic number.

It is an amenable number.

122106156 is an abundant number, since it is smaller than the sum of its proper divisors (162808236).

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

122106156 is a wasteful number, since it uses less digits than its factorization.

122106156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10175520 (or 10175518 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 122106156 is about 11050.1654286259. The cubic root of 122106156 is about 496.1113769568. Note that the first 3 decimals are identical.

Adding to 122106156 its reverse (651601221), we get a palindrome (773707377).

The spelling of 122106156 in words is "one hundred twenty-two million, one hundred six thousand, one hundred fifty-six".