245121240220130 has 8 divisors (see below), whose sum is σ = 441218232396252. Its totient is φ = 98048496088048.

The previous prime is 245121240220111. The next prime is 245121240220133. The reversal of 245121240220130 is 31022042121542.

It can be written as a sum of positive squares in 2 ways, for example, as 242828611195681 + 2292629024449 = 15582959^2 + 1514143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×245121240220130³ (a number of 44 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 245121240220093 and 245121240220102.

It is not an unprimeable number, because it can be changed into a prime (245121240220133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12256062010997 + ... + 12256062011016.

Almost surely, 2^{245121240220130} is an apocalyptic number.

245121240220130 is a deficient number, since it is larger than the sum of its proper divisors (196096992176122).

245121240220130 is a wasteful number, since it uses less digits than its factorization.

245121240220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24512124022020.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 245121240220130 its reverse (31022042121542), we get a palindrome (276143282341672).

The spelling of 245121240220130 in words is "two hundred forty-five trillion, one hundred twenty-one billion, two hundred forty million, two hundred twenty thousand, one hundred thirty".