50161022021 has 12 divisors (see below), whose sum is σ = 55755182700. Its totient is φ = 45088549440.

The previous prime is 50161021997. The next prime is 50161022047. The reversal of 50161022021 is 12022016105.

It can be written as a sum of positive squares in 2 ways, for example, as 32838513796 + 17322508225 = 181214^2 + 131615^2 .

It is not a de Polignac number, because 50161022021 - 2³⁴ = 32981152837 is a prime.

It is a super-2 number, since 2×50161022021² (a number of 22 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 = 50161021984 and 50161022002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50161022081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2318186 + ... + 2339723.

It is an arithmetic number, because the mean of its divisors is an integer number (4646265225).

Almost surely, 2^50161022021 is an apocalyptic number.

It is an amenable number.

50161022021 is a deficient number, since it is larger than the sum of its proper divisors (5594160679).

50161022021 is a wasteful number, since it uses less digits than its factorization.

50161022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658020 (or 4658009 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 50161022021 its reverse (12022016105), we get a palindrome (62183038126).

The spelling of 50161022021 in words is "fifty billion, one hundred sixty-one million, twenty-two thousand, twenty-one".