101010012011221 has 4 divisors (see below), whose sum is σ = 101374669094572. Its totient is φ = 100645354927872.

The previous prime is 101010012011177. The next prime is 101010012011267. The reversal of 101010012011221 is 122110210010101.

It is a happy number.

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 43145008332196 + 57865003679025 = 6568486^2 + 7606905^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010012011221 - 2¹¹ = 101010012009173 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 (101010012011621) 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, 182328541260 + ... + 182328541813.

It is an arithmetic number, because the mean of its divisors is an integer number (25343667273643).

Almost surely, 2^{101010012011221} is an apocalyptic number.

It is an amenable number.

101010012011221 is a deficient number, since it is larger than the sum of its proper divisors (364657083351).

101010012011221 is an equidigital number, since it uses as much as digits as its factorization.

101010012011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364657083350.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101010012011221 its reverse (122110210010101), we get a palindrome (223120222021322).

The spelling of 101010012011221 in words is "one hundred one trillion, ten billion, twelve million, eleven thousand, two hundred twenty-one".