101222011101221 has 4 divisors (see below), whose sum is σ = 101222347546272. Its totient is φ = 101221674656172.

The previous prime is 101222011101149. The next prime is 101222011101241. The reversal of 101222011101221 is 122101110222101.

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.

It is a cyclic number.

It is not a de Polignac number, because 101222011101221 - 2³⁰ = 101220937359397 is a prime.

It is a super-2 number, since 2×101222011101221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101222011101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101222011101241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167770835 + ... + 168373088.

It is an arithmetic number, because the mean of its divisors is an integer number (25305586886568).

Almost surely, 2^{101222011101221} is an apocalyptic number.

It is an amenable number.

101222011101221 is a deficient number, since it is larger than the sum of its proper divisors (336445051).

101222011101221 is an equidigital number, since it uses as much as digits as its factorization.

101222011101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336445050.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101222011101221 its reverse (122101110222101), we get a palindrome (223323121323322).

The spelling of 101222011101221 in words is "one hundred one trillion, two hundred twenty-two billion, eleven million, one hundred one thousand, two hundred twenty-one".