121010212020 has 24 divisors (see below), whose sum is σ = 338828593824. Its totient is φ = 32269389856.

The previous prime is 121010212019. The next prime is 121010212021. The reversal of 121010212020 is 20212010121.

It is an interprime number because it is at equal distance from previous prime (121010212019) and next prime (121010212021).

It is a super-3 number, since 3×121010212020³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 121010211987 and 121010212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010212021) 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, 1008418374 + ... + 1008418493.

It is an arithmetic number, because the mean of its divisors is an integer number (14117858076).

Almost surely, 2^121010212020 is an apocalyptic number.

121010212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010212020 is an abundant number, since it is smaller than the sum of its proper divisors (217818381804).

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

121010212020 is a wasteful number, since it uses less digits than its factorization.

121010212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016836879 (or 2016836877 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121010212020 its reverse (20212010121), we get a palindrome (141222222141).

The spelling of 121010212020 in words is "one hundred twenty-one billion, ten million, two hundred twelve thousand, twenty".