101212302221 has 4 divisors (see below), whose sum is σ = 101213215392. Its totient is φ = 101211389052.

The previous prime is 101212302203. The next prime is 101212302227. The reversal of 101212302221 is 122203212101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122203212101 = 773 ⋅158089537.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212302221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101212302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212302227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262961 + ... + 521126.

It is an arithmetic number, because the mean of its divisors is an integer number (25303303848).

Almost surely, 2^101212302221 is an apocalyptic number.

It is an amenable number.

101212302221 is a deficient number, since it is larger than the sum of its proper divisors (913171).

101212302221 is an equidigital number, since it uses as much as digits as its factorization.

101212302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913170.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 101212302221 its reverse (122203212101), we get a palindrome (223415514322).

The spelling of 101212302221 in words is "one hundred one billion, two hundred twelve million, three hundred two thousand, two hundred twenty-one".