120720571205 has 8 divisors (see below), whose sum is σ = 156008122872. Its totient is φ = 89147498688.

The previous prime is 120720571171. The next prime is 120720571249. The reversal of 120720571205 is 502175027021.

It can be written as a sum of positive squares in 4 ways, for example, as 3429390721 + 117291180484 = 58561^2 + 342478^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120720571205 - 2³² = 116425603909 is a prime.

It is a super-2 number, since 2×120720571205² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928619714 + ... + 928619843.

It is an arithmetic number, because the mean of its divisors is an integer number (19501015359).

Almost surely, 2^120720571205 is an apocalyptic number.

It is an amenable number.

120720571205 is a deficient number, since it is larger than the sum of its proper divisors (35287551667).

120720571205 is a wasteful number, since it uses less digits than its factorization.

120720571205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857239575.

The product of its (nonzero) digits is 9800, while the sum is 32.

Adding to 120720571205 its reverse (502175027021), we get a palindrome (622895598226).

The spelling of 120720571205 in words is "one hundred twenty billion, seven hundred twenty million, five hundred seventy-one thousand, two hundred five".