12200020121122 has 4 divisors (see below), whose sum is σ = 18300030181686. Its totient is φ = 6100010060560.

The previous prime is 12200020121101. The next prime is 12200020121137. The reversal of 12200020121122 is 22112102000221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10727780058241 + 1472240062881 = 3275329^2 + 1213359^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12200020121096 and 12200020121105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3050005030279 + ... + 3050005030282.

Almost surely, 2^{12200020121122} is an apocalyptic number.

12200020121122 is a deficient number, since it is larger than the sum of its proper divisors (6100010060564).

12200020121122 is an equidigital number, since it uses as much as digits as its factorization.

12200020121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100010060563.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12200020121122 its reverse (22112102000221), we get a palindrome (34312122121343).

The spelling of 12200020121122 in words is "twelve trillion, two hundred billion, twenty million, one hundred twenty-one thousand, one hundred twenty-two".