100222002022221 has 40 divisors (see below), whose sum is σ = 151444774043640. Its totient is φ = 66044115044352.

The previous prime is 100222002022213. The next prime is 100222002022267. The reversal of 100222002022221 is 122220200222001.

It can be written as a sum of positive squares in 4 ways, for example, as 61371775352196 + 38850226670025 = 7834014^2 + 6232995^2 .

It is not a de Polignac number, because 100222002022221 - 2³ = 100222002022213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100222002022194 and 100222002022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222002022421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1527346 + ... + 14239971.

It is an arithmetic number, because the mean of its divisors is an integer number (3786119351091).

Almost surely, 2^{100222002022221} is an apocalyptic number.

It is an amenable number.

100222002022221 is a deficient number, since it is larger than the sum of its proper divisors (51222772021419).

100222002022221 is an equidigital number, since it uses as much as digits as its factorization.

100222002022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15768235 (or 15768226 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 100222002022221 its reverse (122220200222001), we get a palindrome (222442202244222).

The spelling of 100222002022221 in words is "one hundred trillion, two hundred twenty-two billion, two million, twenty-two thousand, two hundred twenty-one".