120000121000 has 32 divisors (see below), whose sum is σ = 280800285480. Its totient is φ = 48000048000.

The previous prime is 120000120973. The next prime is 120000121009. The reversal of 120000121000 is 121000021.

It can be written as a sum of positive squares in 4 ways, for example, as 46258546084 + 73741574916 = 215078^2 + 271554^2 .

It is not an unprimeable number, because it can be changed into a prime (120000121009) 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, 59999061 + ... + 60001060.

Almost surely, 2^120000121000 is an apocalyptic number.

120000121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120000121000 is an abundant number, since it is smaller than the sum of its proper divisors (160800164480).

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

120000121000 is a wasteful number, since it uses less digits than its factorization.

120000121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120000142 (or 120000128 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 120000121000 its reverse (121000021), we get a palindrome (120121121021).

The spelling of 120000121000 in words is "one hundred twenty billion, one hundred twenty-one thousand".