120121120978 has 8 divisors (see below), whose sum is σ = 189664927920. Its totient is φ = 56899478340.

The previous prime is 120121120967. The next prime is 120121120979. The reversal of 120121120978 is 879021121021.

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

It is a super-2 number, since 2×120121120978² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120121120979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580541028 + ... + 1580541103.

It is an arithmetic number, because the mean of its divisors is an integer number (23708115990).

Almost surely, 2^120121120978 is an apocalyptic number.

120121120978 is a deficient number, since it is larger than the sum of its proper divisors (69543806942).

120121120978 is a wasteful number, since it uses less digits than its factorization.

120121120978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161082152.

The product of its (nonzero) digits is 4032, while the sum is 34.

Adding to 120121120978 its reverse (879021121021), we get a palindrome (999142241999).

The spelling of 120121120978 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty thousand, nine hundred seventy-eight".