561010050121 has 4 divisors (see below), whose sum is σ = 579107148544. Its totient is φ = 542912951700.

The previous prime is 561010050109. The next prime is 561010050137. The reversal of 561010050121 is 121050010165.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 561010050121 - 2⁷ = 561010049993 is a prime.

It is a super-2 number, since 2×561010050121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561010050092 and 561010050101.

It is not an unprimeable number, because it can be changed into a prime (561010150121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9048549165 + ... + 9048549226.

It is an arithmetic number, because the mean of its divisors is an integer number (144776787136).

Almost surely, 2^561010050121 is an apocalyptic number.

It is an amenable number.

561010050121 is a deficient number, since it is larger than the sum of its proper divisors (18097098423).

561010050121 is a wasteful number, since it uses less digits than its factorization.

561010050121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18097098422.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 561010050121 its reverse (121050010165), we get a palindrome (682060060286).

The spelling of 561010050121 in words is "five hundred sixty-one billion, ten million, fifty thousand, one hundred twenty-one".