100561122 has 16 divisors (see below), whose sum is σ = 223469280. Its totient is φ = 33520356.

The previous prime is 100561099. The next prime is 100561147. The reversal of 100561122 is 221165001.

100561122 is a `hidden beast` number, since 100 + 561 + 1 + 2 + 2 = 666.

It is a super-2 number, since 2×100561122² = 20225078515797768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 100561095 and 100561104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931068 + ... + 931175.

It is an arithmetic number, because the mean of its divisors is an integer number (13966830).

Almost surely, 2^100561122 is an apocalyptic number.

100561122 is an abundant number, since it is smaller than the sum of its proper divisors (122908158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100561122 is a wasteful number, since it uses less digits than its factorization.

100561122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862254 (or 1862248 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 100561122 is about 10028.0168527980. The cubic root of 100561122 is about 465.0254304510.

The spelling of 100561122 in words is "one hundred million, five hundred sixty-one thousand, one hundred twenty-two".