122011806 has 32 divisors (see below), whose sum is σ = 293564160. Its totient is φ = 33025536.

The previous prime is 122011801. The next prime is 122011807. The reversal of 122011806 is 608110221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011801) 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 15 ways as a sum of consecutive naturals, for example, 75651 + ... + 77246.

It is an arithmetic number, because the mean of its divisors is an integer number (9173880).

Almost surely, 2^122011806 is an apocalyptic number.

122011806 is an abundant number, since it is smaller than the sum of its proper divisors (171552354).

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

122011806 is a wasteful number, since it uses less digits than its factorization.

122011806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152928.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 122011806 is about 11045.8954367675. The cubic root of 122011806 is about 495.9835642100.

The spelling of 122011806 in words is "one hundred twenty-two million, eleven thousand, eight hundred six".