100221221220122 has 8 divisors (see below), whose sum is σ = 151327406875872. Its totient is φ = 49778752261500.

The previous prime is 100221221220121. The next prime is 100221221220161. The reversal of 100221221220122 is 221022122122001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 100221221220094 and 100221221220103.

It is not an unprimeable number, because it can be changed into a prime (100221221220121) 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, 165929173904 + ... + 165929174507.

It is an arithmetic number, because the mean of its divisors is an integer number (18915925859484).

Almost surely, 2^{100221221220122} is an apocalyptic number.

100221221220122 is a deficient number, since it is larger than the sum of its proper divisors (51106185655750).

100221221220122 is a wasteful number, since it uses less digits than its factorization.

100221221220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331858348564.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 100221221220122 its reverse (221022122122001), we get a palindrome (321243343342123).

The spelling of 100221221220122 in words is "one hundred trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".