245231342221 has 16 divisors (see below), whose sum is σ = 252398415744. Its totient is φ = 238162010944.

The previous prime is 245231342183. The next prime is 245231342261. The reversal of 245231342221 is 122243132542.

It is a happy number.

245231342221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 245231342221 - 2⁷ = 245231342093 is a prime.

It is a super-2 number, since 2×245231342221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245231342261) 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 15 ways as a sum of consecutive naturals, for example, 7224936 + ... + 7258798.

It is an arithmetic number, because the mean of its divisors is an integer number (15774900984).

Almost surely, 2^245231342221 is an apocalyptic number.

It is an amenable number.

245231342221 is a deficient number, since it is larger than the sum of its proper divisors (7167073523).

245231342221 is a wasteful number, since it uses less digits than its factorization.

245231342221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35300.

The product of its digits is 23040, while the sum is 31.

Adding to 245231342221 its reverse (122243132542), we get a palindrome (367474474763).

The spelling of 245231342221 in words is "two hundred forty-five billion, two hundred thirty-one million, three hundred forty-two thousand, two hundred twenty-one".