12212100122 has 4 divisors (see below), whose sum is σ = 18318150186. Its totient is φ = 6106050060.

The previous prime is 12212100097. The next prime is 12212100149. The reversal of 12212100122 is 22100121221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22100121221 = 211 ⋅104739911.

It can be written as a sum of positive squares in only one way, i.e., 6822925201 + 5389174921 = 82601^2 + 73411^2 .

It is a super-3 number, since 3×12212100122³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12212100097 and 12212100106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3053025029 + ... + 3053025032.

Almost surely, 2^12212100122 is an apocalyptic number.

12212100122 is a deficient number, since it is larger than the sum of its proper divisors (6106050064).

12212100122 is an equidigital number, since it uses as much as digits as its factorization.

12212100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106050063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12212100122 its reverse (22100121221), we get a palindrome (34312221343).

The spelling of 12212100122 in words is "twelve billion, two hundred twelve million, one hundred thousand, one hundred twenty-two".