100001022122 has 12 divisors (see below), whose sum is σ = 159344190150. Its totient is φ = 47059304256.

The previous prime is 100001022119. The next prime is 100001022131. The reversal of 100001022122 is 221220100001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 96931972921 + 3069049201 = 311339^2 + 55399^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86505497 + ... + 86506652.

Almost surely, 2^100001022122 is an apocalyptic number.

100001022122 is a deficient number, since it is larger than the sum of its proper divisors (59343168028).

100001022122 is a wasteful number, since it uses less digits than its factorization.

100001022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173012185 (or 173012168 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100001022122 its reverse (221220100001), we get a palindrome (321221122123).

The spelling of 100001022122 in words is "one hundred billion, one million, twenty-two thousand, one hundred twenty-two".