251220020510234 has 16 divisors (see below), whose sum is σ = 383226075676800. Its totient is φ = 123478096342944.

The previous prime is 251220020510233. The next prime is 251220020510323. The reversal of 251220020510234 is 432015020022152.

It is a happy number.

It is a super-2 number, since 2×251220020510234² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251220020510197 and 251220020510206.

It is not an unprimeable number, because it can be changed into a prime (251220020510233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20267522 + ... + 30219405.

It is an arithmetic number, because the mean of its divisors is an integer number (23951629729800).

Almost surely, 2^{251220020510234} is an apocalyptic number.

251220020510234 is a deficient number, since it is larger than the sum of its proper divisors (132006055166566).

251220020510234 is a wasteful number, since it uses less digits than its factorization.

251220020510234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50529157.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 251220020510234 its reverse (432015020022152), we get a palindrome (683235040532386).

The spelling of 251220020510234 in words is "two hundred fifty-one trillion, two hundred twenty billion, twenty million, five hundred ten thousand, two hundred thirty-four".