122111306 has 8 divisors (see below), whose sum is σ = 193941540. Its totient is φ = 57464128.

The previous prime is 122111299. The next prime is 122111321. The reversal of 122111306 is 603111221.

It can be written as a sum of positive squares in 2 ways, for example, as 91030681 + 31080625 = 9541^2 + 5575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×122111306² = 29822342106051272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is an unprimeable number.

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, 1795721 + ... + 1795788.

Almost surely, 2^122111306 is an apocalyptic number.

122111306 is a deficient number, since it is larger than the sum of its proper divisors (71830234).

122111306 is a wasteful number, since it uses less digits than its factorization.

122111306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591528.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 122111306 is about 11050.3984543545. The cubic root of 122111306 is about 496.1183515920.

Adding to 122111306 its reverse (603111221), we get a palindrome (725222527).

The spelling of 122111306 in words is "one hundred twenty-two million, one hundred eleven thousand, three hundred six".