121000120000 has 70 divisors (see below), whose sum is σ = 300041071748. Its totient is φ = 48400032000.

The previous prime is 121000119971. The next prime is 121000120061. The reversal of 121000120000 is 21000121.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1472502 + ... + 1552501.

Almost surely, 2^121000120000 is an apocalyptic number.

121000120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000120000 is an abundant number, since it is smaller than the sum of its proper divisors (179040951748).

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

121000120000 is an frugal number, since it uses more digits than its factorization.

121000120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025035 (or 3025010 counting only the distinct ones).

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

Adding to 121000120000 its reverse (21000121), we get a palindrome (121021120121).

The spelling of 121000120000 in words is "one hundred twenty-one billion, one hundred twenty thousand".