1152721723220 has 48 divisors (see below), whose sum is σ = 2548530008640. Its totient is φ = 436750868736.

The previous prime is 1152721723211. The next prime is 1152721723243. The reversal of 1152721723220 is 223271272511.

It is a congruent number.

It is an unprimeable number.

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, 2162864 + ... + 2642616.

It is an arithmetic number, because the mean of its divisors is an integer number (53094375180).

Almost surely, 2^{1152721723220} is an apocalyptic number.

1152721723220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152721723220 is an abundant number, since it is smaller than the sum of its proper divisors (1395808285420).

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

1152721723220 is a wasteful number, since it uses less digits than its factorization.

1152721723220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486104 (or 486102 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 1152721723220 its reverse (223271272511), we get a palindrome (1375992995731).

The spelling of 1152721723220 in words is "one trillion, one hundred fifty-two billion, seven hundred twenty-one million, seven hundred twenty-three thousand, two hundred twenty".