2200212222121 has 4 divisors (see below), whose sum is σ = 2200298689732. Its totient is φ = 2200125754512.

The previous prime is 2200212222119. The next prime is 2200212222133. The reversal of 2200212222121 is 1212222120022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 823485466521 + 1376726755600 = 907461^2 + 1173340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2200212222121 - 2¹ = 2200212222119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2200212222181) 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, 43195626 + ... + 43246531.

It is an arithmetic number, because the mean of its divisors is an integer number (550074672433).

Almost surely, 2^{2200212222121} is an apocalyptic number.

It is an amenable number.

2200212222121 is a deficient number, since it is larger than the sum of its proper divisors (86467611).

2200212222121 is an equidigital number, since it uses as much as digits as its factorization.

2200212222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86467610.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2200212222121 its reverse (1212222120022), we get a palindrome (3412434342143).

The spelling of 2200212222121 in words is "two trillion, two hundred billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".