260398021122 has 18 divisors (see below), whose sum is σ = 564200403273. Its totient is φ = 86798618712.

The previous prime is 260398021097. The next prime is 260398021123. The reversal of 260398021122 is 221120893062.

It is a happy number.

260398021122 is a `hidden beast` number, since 2 + 603 + 9 + 8 + 0 + 21 + 1 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 203454221481 + 56943799641 = 451059^2 + 238629^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=360831.

It is not an unprimeable number, because it can be changed into a prime (260398021123) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2104848 + ... + 2225124.

Almost surely, 2^260398021122 is an apocalyptic number.

260398021122 is an abundant number, since it is smaller than the sum of its proper divisors (303802382151).

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

260398021122 is an frugal number, since it uses more digits than its factorization.

260398021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240562 (or 120282 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 260398021122 in words is "two hundred sixty billion, three hundred ninety-eight million, twenty-one thousand, one hundred twenty-two".