119821179078721 has 8 divisors (see below), whose sum is σ = 121462756289000. Its totient is φ = 118179607036032.

The previous prime is 119821179078691. The next prime is 119821179078737. The reversal of 119821179078721 is 127870971128911.

It can be written as a sum of positive squares in 4 ways, for example, as 49569541438096 + 70251637640625 = 7040564^2 + 8381625^2 .

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 119821179078721 - 2¹⁷ = 119821178947649 is a prime.

It is a super-2 number, since 2×119821179078721² (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 (119821179078761) 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, 81467155 + ... + 82924903.

It is an arithmetic number, because the mean of its divisors is an integer number (15182844536125).

Almost surely, 2^{119821179078721} is an apocalyptic number.

It is an amenable number.

119821179078721 is a deficient number, since it is larger than the sum of its proper divisors (1641577210279).

119821179078721 is a wasteful number, since it uses less digits than its factorization.

119821179078721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583795.

The product of its (nonzero) digits is 7112448, while the sum is 64.

The spelling of 119821179078721 in words is "one hundred nineteen trillion, eight hundred twenty-one billion, one hundred seventy-nine million, seventy-eight thousand, seven hundred twenty-one".