101222101221 has 16 divisors (see below), whose sum is σ = 135881092800. Its totient is φ = 67023168768.

The previous prime is 101222101219. The next prime is 101222101237. The reversal of 101222101221 is 122101222101.

It is not a de Polignac number, because 101222101221 - 2¹ = 101222101219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101222101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101222101621) 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 15 ways as a sum of consecutive naturals, for example, 331485 + ... + 558861.

It is an arithmetic number, because the mean of its divisors is an integer number (8492568300).

Almost surely, 2^101222101221 is an apocalyptic number.

It is an amenable number.

101222101221 is a deficient number, since it is larger than the sum of its proper divisors (34658991579).

101222101221 is a wasteful number, since it uses less digits than its factorization.

101222101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228388.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101222101221 its reverse (122101222101), we get a palindrome (223323323322).

The spelling of 101222101221 in words is "one hundred one billion, two hundred twenty-two million, one hundred one thousand, two hundred twenty-one".