121012122020 has 48 divisors (see below), whose sum is σ = 254719745280. Its totient is φ = 48291791616.

The previous prime is 121012122017. The next prime is 121012122029. The reversal of 121012122020 is 20221210121.

It is a junction number, because it is equal to n+sod(n) for n = 121012121986 and 121012122004.

It is not an unprimeable number, because it can be changed into a prime (121012122029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17629109 + ... + 17635971.

It is an arithmetic number, because the mean of its divisors is an integer number (5306661360).

Almost surely, 2^121012122020 is an apocalyptic number.

121012122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012122020 is an abundant number, since it is smaller than the sum of its proper divisors (133707623260).

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

121012122020 is a wasteful number, since it uses less digits than its factorization.

121012122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8804 (or 8802 counting only the distinct ones).

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

Adding to 121012122020 its reverse (20221210121), we get a palindrome (141233332141).

The spelling of 121012122020 in words is "one hundred twenty-one billion, twelve million, one hundred twenty-two thousand, twenty".