120121121000 has 32 divisors (see below), whose sum is σ = 281083425480.
Its totient is φ = 48048448000.
The previous prime is 120121120979. The next prime is 120121121011. The reversal of 120121121000 is 121121021.
It can be written as a sum of positive squares in 4 ways, for example, as 11166994276 + 108954126724 = 105674^2 + 330082^2
It is an unprimeable number.
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 7 ways as a sum of consecutive naturals, for example, 60059561 + ... + 60061560.
Almost surely, 2120121121000 is an apocalyptic number.
120121121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
120121121000 is an abundant number, since it is smaller than the sum of its proper divisors (160962304480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
120121121000 is a wasteful number, since it uses less digits than its factorization.
120121121000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 120121142 (or 120121128 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 11.
Adding to 120121121000 its reverse (121121021), we get a palindrome (120242242021).
The spelling of 120121121000 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand".