121121110122000 has 80 divisors (see below), whose sum is σ = 390494459052672. Its totient is φ = 32298962697600.

The previous prime is 121121110121989. The next prime is 121121110122049. The reversal of 121121110122000 is 221011121121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 10093419844 + ... + 10093431843.

Almost surely, 2^{121121110122000} is an apocalyptic number.

121121110122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121110122000 is an abundant number, since it is smaller than the sum of its proper divisors (269373348930672).

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

121121110122000 is a wasteful number, since it uses less digits than its factorization.

121121110122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20186851713 (or 20186851697 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121121110122000 its reverse (221011121121), we get a palindrome (121342121243121).

The spelling of 121121110122000 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred ten million, one hundred twenty-two thousand".