120157335576721 has 4 divisors (see below), whose sum is σ = 120451118793700. Its totient is φ = 119863552359744.

The previous prime is 120157335576679. The next prime is 120157335576827. The reversal of 120157335576721 is 127675533751021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73362993648400 + 46794341928321 = 8565220^2 + 6840639^2 .

It is a cyclic number.

It is not a de Polignac number, because 120157335576721 - 2⁹ = 120157335576209 is a prime.

It is a super-2 number, since 2×120157335576721² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120157335570721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146891607876 + ... + 146891608693.

It is an arithmetic number, because the mean of its divisors is an integer number (30112779698425).

Almost surely, 2^{120157335576721} is an apocalyptic number.

It is an amenable number.

120157335576721 is a deficient number, since it is larger than the sum of its proper divisors (293783216979).

120157335576721 is an equidigital number, since it uses as much as digits as its factorization.

120157335576721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293783216978.

The product of its (nonzero) digits is 9261000, while the sum is 55.

The spelling of 120157335576721 in words is "one hundred twenty trillion, one hundred fifty-seven billion, three hundred thirty-five million, five hundred seventy-six thousand, seven hundred twenty-one".