1024220161 has 4 divisors (see below), whose sum is σ = 1025770324. Its totient is φ = 1022670000.

The previous prime is 1024220147. The next prime is 1024220201. The reversal of 1024220161 is 1610224201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 464661136 + 559559025 = 21556^2 + 23655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1024220161 - 2⁷ = 1024220033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1024220101) 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, 774090 + ... + 775411.

It is an arithmetic number, because the mean of its divisors is an integer number (256442581).

Almost surely, 2^1024220161 is an apocalyptic number.

It is an amenable number.

1024220161 is a deficient number, since it is larger than the sum of its proper divisors (1550163).

1024220161 is an equidigital number, since it uses as much as digits as its factorization.

1024220161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550162.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1024220161 is about 32003.4398307432. The cubic root of 1024220161 is about 1008.0090705412.

Adding to 1024220161 its reverse (1610224201), we get a palindrome (2634444362).

It can be divided in two parts, 10242 and 20161, that added together give a palindrome (30403).

The spelling of 1024220161 in words is "one billion, twenty-four million, two hundred twenty thousand, one hundred sixty-one".