100002222221121 has 48 divisors (see below), whose sum is σ = 161942646465600. Its totient is φ = 58931296709760.

The previous prime is 100002222221101. The next prime is 100002222221137. The reversal of 100002222221121 is 121122222200001.

It is a happy number.

100002222221121 is a `hidden beast` number, since 100 + 0 + 0 + 2 + 222 + 221 + 121 = 666.

It is not a de Polignac number, because 100002222221121 - 2¹¹ = 100002222219073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100002222221094 and 100002222221103.

It is not an unprimeable number, because it can be changed into a prime (100002222221101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3138355 + ... + 14486328.

It is an arithmetic number, because the mean of its divisors is an integer number (3373805134700).

Almost surely, 2^{100002222221121} is an apocalyptic number.

100002222221121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100002222221121 is a deficient number, since it is larger than the sum of its proper divisors (61940424244479).

100002222221121 is a wasteful number, since it uses less digits than its factorization.

100002222221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17626286 (or 17626283 counting only the distinct ones).

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

Adding to 100002222221121 its reverse (121122222200001), we get a palindrome (221124444421122).

The spelling of 100002222221121 in words is "one hundred trillion, two billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".