100222121211221 has 8 divisors (see below), whose sum is σ = 101005812045600. Its totient is φ = 99438712747920.

The previous prime is 100222121211193. The next prime is 100222121211319. The reversal of 100222121211221 is 122112121222001.

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 100222121211221 - 2³⁸ = 99947243304277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100222121211193 and 100222121211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222121211521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69880106 + ... + 71299883.

It is an arithmetic number, because the mean of its divisors is an integer number (12625726505700).

Almost surely, 2^{100222121211221} is an apocalyptic number.

It is an amenable number.

100222121211221 is a deficient number, since it is larger than the sum of its proper divisors (783690834379).

100222121211221 is a wasteful number, since it uses less digits than its factorization.

100222121211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141185539.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 100222121211221 its reverse (122112121222001), we get a palindrome (222334242433222).

The spelling of 100222121211221 in words is "one hundred trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twenty-one".