2203121132221 has 2 divisors, whose sum is σ = 2203121132222. Its totient is φ = 2203121132220.

The previous prime is 2203121132213. The next prime is 2203121132237. The reversal of 2203121132221 is 1222311213022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1545083804196 + 658037328025 = 1243014^2 + 811195^2 .

It is a cyclic number.

It is not a de Polignac number, because 2203121132221 - 2³ = 2203121132213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2203121132192 and 2203121132201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2203121172221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101560566110 + 1101560566111.

It is an arithmetic number, because the mean of its divisors is an integer number (1101560566111).

Almost surely, 2^{2203121132221} is an apocalyptic number.

It is an amenable number.

2203121132221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2203121132221 is an equidigital number, since it uses as much as digits as its factorization.

2203121132221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2203121132221 its reverse (1222311213022), we get a palindrome (3425432345243).

The spelling of 2203121132221 in words is "two trillion, two hundred three billion, one hundred twenty-one million, one hundred thirty-two thousand, two hundred twenty-one".