122212005 has 16 divisors (see below), whose sum is σ = 195687360. Its totient is φ = 65130368.

The previous prime is 122211989. The next prime is 122212007. The reversal of 122212005 is 500212221.

It is a cyclic number.

It is not a de Polignac number, because 122212005 - 2⁴ = 122211989 is a prime.

It is a super-2 number, since 2×122212005² = 29871548332240050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26566 + ... + 30824.

It is an arithmetic number, because the mean of its divisors is an integer number (12230460).

Almost surely, 2^122212005 is an apocalyptic number.

122212005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122212005 is a deficient number, since it is larger than the sum of its proper divisors (73475355).

122212005 is a wasteful number, since it uses less digits than its factorization.

122212005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6180.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 122212005 is about 11054.9538669322. The cubic root of 122212005 is about 496.2546886685.

Adding to 122212005 its reverse (500212221), we get a palindrome (622424226).

The spelling of 122212005 in words is "one hundred twenty-two million, two hundred twelve thousand, five".