1012220132221 has 2 divisors, whose sum is σ = 1012220132222. Its totient is φ = 1012220132220.

The previous prime is 1012220132213. The next prime is 1012220132263. The reversal of 1012220132221 is 1222310222101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 977357640996 + 34862491225 = 988614^2 + 186715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012220132221 - 2³ = 1012220132213 is a prime.

It is a super-3 number, since 3×1012220132221³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012220132921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506110066110 + 506110066111.

It is an arithmetic number, because the mean of its divisors is an integer number (506110066111).

Almost surely, 2^{1012220132221} is an apocalyptic number.

It is an amenable number.

1012220132221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012220132221 is an equidigital number, since it uses as much as digits as its factorization.

1012220132221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1012220132221 its reverse (1222310222101), we get a palindrome (2234530354322).

The spelling of 1012220132221 in words is "one trillion, twelve billion, two hundred twenty million, one hundred thirty-two thousand, two hundred twenty-one".