121013210102020 has 48 divisors (see below), whose sum is σ = 255458350249200. Its totient is φ = 48152379179520.

The previous prime is 121013210102009. The next prime is 121013210102039. The reversal of 121013210102020 is 20201012310121.

It can be written as a sum of positive squares in 8 ways, for example, as 21639466526976 + 99373743575044 = 4651824^2 + 9968638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121013210101985 and 121013210102003.

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, 13458315 + ... + 20570674.

It is an arithmetic number, because the mean of its divisors is an integer number (5322048963525).

Almost surely, 2^{121013210102020} is an apocalyptic number.

121013210102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121013210102020 is an abundant number, since it is smaller than the sum of its proper divisors (134445140147180).

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

121013210102020 is a wasteful number, since it uses less digits than its factorization.

121013210102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34029928 (or 34029926 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121013210102020 its reverse (20201012310121), we get a palindrome (141214222412141).

The spelling of 121013210102020 in words is "one hundred twenty-one trillion, thirteen billion, two hundred ten million, one hundred two thousand, twenty".