243120222051 has 16 divisors (see below), whose sum is σ = 386576254464. Its totient is φ = 132885586944.

The previous prime is 243120222041. The next prime is 243120222083. The reversal of 243120222051 is 150222021342.

243120222051 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 243120222051 - 2⁵ = 243120222019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243120222041) 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, 251676766 + ... + 251677731.

It is an arithmetic number, because the mean of its divisors is an integer number (24161015904).

Almost surely, 2^243120222051 is an apocalyptic number.

243120222051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243120222051 is a deficient number, since it is larger than the sum of its proper divisors (143456032413).

243120222051 is a wasteful number, since it uses less digits than its factorization.

243120222051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503354530.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 243120222051 its reverse (150222021342), we get a palindrome (393342243393).

The spelling of 243120222051 in words is "two hundred forty-three billion, one hundred twenty million, two hundred twenty-two thousand, fifty-one".