101212110221221 has 8 divisors (see below), whose sum is σ = 106929889009920. Its totient is φ = 95642845167408.

The previous prime is 101212110221153. The next prime is 101212110221239. The reversal of 101212110221221 is 122122011212101.

It is a happy number.

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 101212110221221 - 2¹¹ = 101212110219173 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 (101212110201221) 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, 37128432321 + ... + 37128435046.

It is an arithmetic number, because the mean of its divisors is an integer number (13366236126240).

Almost surely, 2^{101212110221221} is an apocalyptic number.

It is an amenable number.

101212110221221 is a deficient number, since it is larger than the sum of its proper divisors (5717778788699).

101212110221221 is an equidigital number, since it uses as much as digits as its factorization.

101212110221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74256867443.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 101212110221221 its reverse (122122011212101), we get a palindrome (223334121433322).

The spelling of 101212110221221 in words is "one hundred one trillion, two hundred twelve billion, one hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".