245042221220220 has 96 divisors (see below), whose sum is σ = 686903578905600. Its totient is φ = 65269802940160.

The previous prime is 245042221220213. The next prime is 245042221220261. The reversal of 245042221220220 is 22022122240542.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1316283706 + ... + 1316469854.

It is an arithmetic number, because the mean of its divisors is an integer number (7155245613600).

Almost surely, 2^{245042221220220} is an apocalyptic number.

245042221220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245042221220220 is an abundant number, since it is smaller than the sum of its proper divisors (441861357685380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245042221220220 is a wasteful number, since it uses less digits than its factorization.

245042221220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211155 (or 211153 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 245042221220220 its reverse (22022122240542), we get a palindrome (267064343460762).

The spelling of 245042221220220 in words is "two hundred forty-five trillion, forty-two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty".