121120212020 has 24 divisors (see below), whose sum is σ = 256870790568. Its totient is φ = 47968400000.

The previous prime is 121120212011. The next prime is 121120212047. The reversal of 121120212020 is 20212021121.

It can be written as a sum of positive squares in 4 ways, for example, as 6868099876 + 114252112144 = 82874^2 + 338012^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121120211986 and 121120212004.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29978231 + ... + 29982270.

It is an arithmetic number, because the mean of its divisors is an integer number (10702949607).

Almost surely, 2^121120212020 is an apocalyptic number.

121120212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121120212020 is an abundant number, since it is smaller than the sum of its proper divisors (135750578548).

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

121120212020 is a wasteful number, since it uses less digits than its factorization.

121120212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59960611 (or 59960609 counting only the distinct ones).

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

Adding to 121120212020 its reverse (20212021121), we get a palindrome (141332233141).

The spelling of 121120212020 in words is "one hundred twenty-one billion, one hundred twenty million, two hundred twelve thousand, twenty".