121011110020000 has 120 divisors (see below), whose sum is σ = 297988793337312. Its totient is φ = 48358380000000.

The previous prime is 121011110019973. The next prime is 121011110020007. The reversal of 121011110020000 is 20011110121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (121011110020007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18141525 + ... + 23898475.

Almost surely, 2^{121011110020000} is an apocalyptic number.

121011110020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121011110020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148994396668656).

121011110020000 is an abundant number, since it is smaller than the sum of its proper divisors (176977683317312).

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

121011110020000 is an equidigital number, since it uses as much as digits as its factorization.

121011110020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758032 (or 5758009 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121011110020000 its reverse (20011110121), we get a palindrome (121031121130121).

It can be divided in two parts, 121011 and 110020000, that added together give a palindrome (110141011).

The spelling of 121011110020000 in words is "one hundred twenty-one trillion, eleven billion, one hundred ten million, twenty thousand".