10021221241 has 2 divisors, whose sum is σ = 10021221242. Its totient is φ = 10021221240.

The previous prime is 10021221239. The next prime is 10021221269. The reversal of 10021221241 is 14212212001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6728756841 + 3292464400 = 82029^2 + 57380^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021221241 - 2¹ = 10021221239 is a prime.

It is a super-2 number, since 2×10021221241² (a number of 21 digits) contains 22 as substring.

Together with 10021221239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10021251241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010610620 + 5010610621.

It is an arithmetic number, because the mean of its divisors is an integer number (5010610621).

Almost surely, 2^10021221241 is an apocalyptic number.

It is an amenable number.

10021221241 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021221241 is an equidigital number, since it uses as much as digits as its factorization.

10021221241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10021221241 its reverse (14212212001), we get a palindrome (24233433242).

The spelling of 10021221241 in words is "ten billion, twenty-one million, two hundred twenty-one thousand, two hundred forty-one".