122220012 has 12 divisors (see below), whose sum is σ = 285180056. Its totient is φ = 40740000.

The previous prime is 122219983. The next prime is 122220019. The reversal of 122220012 is 210022221.

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

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 10185001 = 122220012 / (1 + 2 + 2 + 2 + 2 + 0 + 0 + 1 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 122220012.

It is not an unprimeable number, because it can be changed into a prime (122220019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5092489 + ... + 5092512.

Almost surely, 2^122220012 is an apocalyptic number.

122220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122220012 is an abundant number, since it is smaller than the sum of its proper divisors (162960044).

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

122220012 is a wasteful number, since it uses less digits than its factorization.

122220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10185008 (or 10185006 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 122220012 is about 11055.3160063383. The cubic root of 122220012 is about 496.2655261868.

Adding to 122220012 its reverse (210022221), we get a palindrome (332242233).

The spelling of 122220012 in words is "one hundred twenty-two million, two hundred twenty thousand, twelve".