14722781121 has 12 divisors (see below), whose sum is σ = 21267976548. Its totient is φ = 9814385664.

The previous prime is 14722781107. The next prime is 14722781147. The reversal of 14722781121 is 12118722741.

14722781121 is a `hidden beast` number, since 1 + 472 + 2 + 78 + 112 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5253350400 + 9469430721 = 72480^2 + 97311^2 .

It is not a de Polignac number, because 14722781121 - 2¹⁷ = 14722650049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14722781221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62701 + ... + 182693.

It is an arithmetic number, because the mean of its divisors is an integer number (1772331379).

Almost surely, 2^14722781121 is an apocalyptic number.

It is an amenable number.

14722781121 is a deficient number, since it is larger than the sum of its proper divisors (6545195427).

14722781121 is a wasteful number, since it uses less digits than its factorization.

14722781121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133632 (or 133629 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The spelling of 14722781121 in words is "fourteen billion, seven hundred twenty-two million, seven hundred eighty-one thousand, one hundred twenty-one".