121121000022020 has 96 divisors (see below), whose sum is σ = 271122911797248. Its totient is φ = 45345431843712.

The previous prime is 121121000021939. The next prime is 121121000022049. The reversal of 121121000022020 is 20220000121121.

121121000022020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121121000021986 and 121121000022004.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 92902379 + ... + 94197101.

It is an arithmetic number, because the mean of its divisors is an integer number (2824196997888).

Almost surely, 2^{121121000022020} is an apocalyptic number.

121121000022020 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 121121000022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135561455898624).

121121000022020 is an abundant number, since it is smaller than the sum of its proper divisors (150001911775228).

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

121121000022020 is a wasteful number, since it uses less digits than its factorization.

121121000022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299129 (or 1299127 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121121000022020 its reverse (20220000121121), we get a palindrome (141341000143141).

The spelling of 121121000022020 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty-two thousand, twenty".