100022021212221 has 24 divisors (see below), whose sum is σ = 148026961345536. Its totient is φ = 65043150096960.

The previous prime is 100022021212193. The next prime is 100022021212229. The reversal of 100022021212221 is 122212120220001.

It is a happy number.

100022021212221 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 220 + 212 + 12 + 221 = 666.

It is not a de Polignac number, because 100022021212221 - 2⁵ = 100022021212189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100022021212194 and 100022021212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100022021212229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22597995 + ... + 26659208.

It is an arithmetic number, because the mean of its divisors is an integer number (6167790056064).

Almost surely, 2^{100022021212221} is an apocalyptic number.

It is an amenable number.

100022021212221 is a deficient number, since it is larger than the sum of its proper divisors (48004940133315).

100022021212221 is a wasteful number, since it uses less digits than its factorization.

100022021212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49262753 (or 49262750 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100022021212221 its reverse (122212120220001), we get a palindrome (222234141432222).

The spelling of 100022021212221 in words is "one hundred trillion, twenty-two billion, twenty-one million, two hundred twelve thousand, two hundred twenty-one".