14572721121220 has 24 divisors (see below), whose sum is σ = 30628366302744. Its totient is φ = 5824202363136.

The previous prime is 14572721121151. The next prime is 14572721121223. The reversal of 14572721121220 is 2212112727541.

It can be written as a sum of positive squares in 4 ways, for example, as 172836421696 + 14399884699524 = 415736^2 + 3794718^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 14572721121220.

It is not an unprimeable number, because it can be changed into a prime (14572721121223) 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, 305355879 + ... + 305403598.

It is an arithmetic number, because the mean of its divisors is an integer number (1276181929281).

Almost surely, 2^{14572721121220} is an apocalyptic number.

14572721121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14572721121220 is an abundant number, since it is smaller than the sum of its proper divisors (16055645181524).

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

14572721121220 is a wasteful number, since it uses less digits than its factorization.

14572721121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610760679 (or 610760677 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

Adding to 14572721121220 its reverse (2212112727541), we get a palindrome (16784833848761).

The spelling of 14572721121220 in words is "fourteen trillion, five hundred seventy-two billion, seven hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty".