12212200022121 has 32 divisors (see below), whose sum is σ = 19740938198400. Its totient is φ = 7399814869440.

The previous prime is 12212200022069. The next prime is 12212200022131. The reversal of 12212200022121 is 12122000221221.

It is a happy number.

12212200022121 is a `hidden beast` number, since 1 + 221 + 2 + 200 + 0 + 221 + 21 = 666.

12212200022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12212200022121 - 2¹⁰ = 12212200021097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212200022094 and 12212200022103.

It is not an unprimeable number, because it can be changed into a prime (12212200022131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2767086 + ... + 5664023.

It is an arithmetic number, because the mean of its divisors is an integer number (616904318700).

Almost surely, 2^{12212200022121} is an apocalyptic number.

12212200022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12212200022121 is a deficient number, since it is larger than the sum of its proper divisors (7528738176279).

12212200022121 is a wasteful number, since it uses less digits than its factorization.

12212200022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8436006 (or 8436000 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12212200022121 its reverse (12122000221221), we get a palindrome (24334200243342).

It can be divided in two parts, 1 and 2212200022121, that added together give a palindrome (2212200022122).

The spelling of 12212200022121 in words is "twelve trillion, two hundred twelve billion, two hundred million, twenty-two thousand, one hundred twenty-one".