121010102020 has 24 divisors (see below), whose sum is σ = 254283450624. Its totient is φ = 48373138656.

The previous prime is 121010102011. The next prime is 121010102021. The reversal of 121010102020 is 20201010121.

121010102020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×121010102020³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 121010101988 and 121010102006.

It is not an unprimeable number, because it can be changed into a prime (121010102021) 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 7 ways as a sum of consecutive naturals, for example, 1899262 + ... + 1961941.

It is an arithmetic number, because the mean of its divisors is an integer number (10595143776).

Almost surely, 2^121010102020 is an apocalyptic number.

121010102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010102020 is an abundant number, since it is smaller than the sum of its proper divisors (133273348604).

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

121010102020 is a wasteful number, since it uses less digits than its factorization.

121010102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862779 (or 3862777 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121010102020 its reverse (20201010121), we get a palindrome (141211112141).

The spelling of 121010102020 in words is "one hundred twenty-one billion, ten million, one hundred two thousand, twenty".