10161221053 has 4 divisors (see below), whose sum is σ = 10161475740. Its totient is φ = 10160966368.

The previous prime is 10161221041. The next prime is 10161221069. The reversal of 10161221053 is 35012216101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35012216101 = 929 ⋅37688069.

It can be written as a sum of positive squares in 2 ways, for example, as 4368945604 + 5792275449 = 66098^2 + 76107^2 .

It is a cyclic number.

It is not a de Polignac number, because 10161221053 - 2¹³ = 10161212861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10161221023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53050 + ... + 152107.

It is an arithmetic number, because the mean of its divisors is an integer number (2540368935).

Almost surely, 2^10161221053 is an apocalyptic number.

It is an amenable number.

10161221053 is a deficient number, since it is larger than the sum of its proper divisors (254687).

10161221053 is an equidigital number, since it uses as much as digits as its factorization.

10161221053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254686.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 10161221053 its reverse (35012216101), we get a palindrome (45173437154).

The spelling of 10161221053 in words is "ten billion, one hundred sixty-one million, two hundred twenty-one thousand, fifty-three".