100561004122 has 4 divisors (see below), whose sum is σ = 150841506186. Its totient is φ = 50280502060.

The previous prime is 100561004119. The next prime is 100561004153. The reversal of 100561004122 is 221400165001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80054477721 + 20506526401 = 282939^2 + 143201^2 .

It is a super-2 number, since 2×100561004122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100561004093 and 100561004102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25140251029 + ... + 25140251032.

Almost surely, 2^100561004122 is an apocalyptic number.

100561004122 is a deficient number, since it is larger than the sum of its proper divisors (50280502064).

100561004122 is an equidigital number, since it uses as much as digits as its factorization.

100561004122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50280502063.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 100561004122 its reverse (221400165001), we get a palindrome (321961169123).

The spelling of 100561004122 in words is "one hundred billion, five hundred sixty-one million, four thousand, one hundred twenty-two".