10112020001221 has 2 divisors, whose sum is σ = 10112020001222. Its totient is φ = 10112020001220.

The previous prime is 10112020001207. The next prime is 10112020001233. The reversal of 10112020001221 is 12210002021101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9611550062500 + 500469938721 = 3100250^2 + 707439^2 .

It is a cyclic number.

It is not a de Polignac number, because 10112020001221 - 2¹¹ = 10112019999173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10112020001261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5056010000610 + 5056010000611.

It is an arithmetic number, because the mean of its divisors is an integer number (5056010000611).

Almost surely, 2^{10112020001221} is an apocalyptic number.

It is an amenable number.

10112020001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10112020001221 is an equidigital number, since it uses as much as digits as its factorization.

10112020001221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10112020001221 its reverse (12210002021101), we get a palindrome (22322022022322).

The spelling of 10112020001221 in words is "ten trillion, one hundred twelve billion, twenty million, one thousand, two hundred twenty-one".