100220122212221 has 8 divisors (see below), whose sum is σ = 109333746903744. Its totient is φ = 91106948269120.

The previous prime is 100220122212181. The next prime is 100220122212241. The reversal of 100220122212221 is 122212221022001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100220122212221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100220122212193 and 100220122212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220122212241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112222121 + ... + 113111646.

It is an arithmetic number, because the mean of its divisors is an integer number (13666718362968).

Almost surely, 2^{100220122212221} is an apocalyptic number.

100220122212221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100220122212221 is a deficient number, since it is larger than the sum of its proper divisors (9113624691523).

100220122212221 is a wasteful number, since it uses less digits than its factorization.

100220122212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225374211.

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

Adding to 100220122212221 its reverse (122212221022001), we get a palindrome (222432343234222).

The spelling of 100220122212221 in words is "one hundred trillion, two hundred twenty billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-one".