101030310131221 has 4 divisors (see below), whose sum is σ = 101034346041292. Its totient is φ = 101026274221152.

The previous prime is 101030310131213. The next prime is 101030310131263. The reversal of 101030310131221 is 122131013030101.

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 20977224408100 + 80053085723121 = 4580090^2 + 8947239^2 .

It is a cyclic number.

It is not a de Polignac number, because 101030310131221 - 2³ = 101030310131213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101030310138221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2017917486 + ... + 2017967551.

It is an arithmetic number, because the mean of its divisors is an integer number (25258586510323).

Almost surely, 2^{101030310131221} is an apocalyptic number.

It is an amenable number.

101030310131221 is a deficient number, since it is larger than the sum of its proper divisors (4035910071).

101030310131221 is an equidigital number, since it uses as much as digits as its factorization.

101030310131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035910070.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 101030310131221 its reverse (122131013030101), we get a palindrome (223161323161322).

The spelling of 101030310131221 in words is "one hundred one trillion, thirty billion, three hundred ten million, one hundred thirty-one thousand, two hundred twenty-one".