20121200122 has 8 divisors (see below), whose sum is σ = 30182466996. Its totient is φ = 10060377792.

The previous prime is 20121200111. The next prime is 20121200129. The reversal of 20121200122 is 22100212102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19835623921 + 285576201 = 140839^2 + 16899^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20121200129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47058 + ... + 206050.

Almost surely, 2^20121200122 is an apocalyptic number.

20121200122 is a deficient number, since it is larger than the sum of its proper divisors (10061266874).

20121200122 is a wasteful number, since it uses less digits than its factorization.

20121200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222272.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20121200122 its reverse (22100212102), we get a palindrome (42221412224).

The spelling of 20121200122 in words is "twenty billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-two".