245221345311 has 16 divisors (see below), whose sum is σ = 338762444160. Its totient is φ = 157598108640.

The previous prime is 245221345307. The next prime is 245221345321. The reversal of 245221345311 is 113543122542.

It is not a de Polignac number, because 245221345311 - 2² = 245221345307 is a prime.

It is a super-2 number, since 2×245221345311² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245221345321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2135845 + ... + 2247726.

It is an arithmetic number, because the mean of its divisors is an integer number (21172652760).

Almost surely, 2^245221345311 is an apocalyptic number.

245221345311 is a deficient number, since it is larger than the sum of its proper divisors (93541098849).

245221345311 is a wasteful number, since it uses less digits than its factorization.

245221345311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384246.

The product of its digits is 28800, while the sum is 33.

Adding to 245221345311 its reverse (113543122542), we get a palindrome (358764467853).

The spelling of 245221345311 in words is "two hundred forty-five billion, two hundred twenty-one million, three hundred forty-five thousand, three hundred eleven".