100212222212221 has 16 divisors (see below), whose sum is σ = 114563454445440. Its totient is φ = 85869794223360.

The previous prime is 100212222212213. The next prime is 100212222212269. The reversal of 100212222212221 is 122212222212001.

It is not a de Polignac number, because 100212222212221 - 2³ = 100212222212213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100212222212192 and 100212222212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212222213221) 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, 303205785 + ... + 303536113.

It is an arithmetic number, because the mean of its divisors is an integer number (7160215902840).

Almost surely, 2^{100212222212221} is an apocalyptic number.

It is an amenable number.

100212222212221 is a deficient number, since it is larger than the sum of its proper divisors (14351232233219).

100212222212221 is an equidigital number, since it uses as much as digits as its factorization.

100212222212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343524.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 100212222212221 its reverse (122212222212001), we get a palindrome (222424444424222).

The spelling of 100212222212221 in words is "one hundred trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty-one".