101222220101221 has 16 divisors (see below), whose sum is σ = 106479744445440. Its totient is φ = 96089937240960.

The previous prime is 101222220101173. The next prime is 101222220101269. The reversal of 101222220101221 is 122101022222101.

It is an interprime number because it is at equal distance from previous prime (101222220101173) and next prime (101222220101269).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101222220101221 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 (101222220101621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2376000 + ... + 14425318.

It is an arithmetic number, because the mean of its divisors is an integer number (6654984027840).

Almost surely, 2^{101222220101221} is an apocalyptic number.

It is an amenable number.

101222220101221 is a deficient number, since it is larger than the sum of its proper divisors (5257524344219).

101222220101221 is a wasteful number, since it uses less digits than its factorization.

101222220101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12054516.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 101222220101221 its reverse (122101022222101), we get a palindrome (223323242323322).

The spelling of 101222220101221 in words is "one hundred one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".