101010101221 has 8 divisors (see below), whose sum is σ = 101154110400. Its totient is φ = 100866168000.

The previous prime is 101010101189. The next prime is 101010101243. The reversal of 101010101221 is 122101010101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101010101221 - 2⁵ = 101010101189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101010101198 and 101010101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101010111221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2970765 + ... + 3004573.

It is an arithmetic number, because the mean of its divisors is an integer number (12644263800).

Almost surely, 2^101010101221 is an apocalyptic number.

It is an amenable number.

101010101221 is a deficient number, since it is larger than the sum of its proper divisors (144009179).

101010101221 is an equidigital number, since it uses as much as digits as its factorization.

101010101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37979.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101010101221 its reverse (122101010101), we get a palindrome (223111111322).

The spelling of 101010101221 in words is "one hundred one billion, ten million, one hundred one thousand, two hundred twenty-one".