121213121212020 has 192 divisors, whose sum is σ = 341422397568000. Its totient is φ = 32131116810240.

The previous prime is 121213121212003. The next prime is 121213121212031. The reversal of 121213121212020 is 20212121312121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26072942656 + ... + 26072947304.

It is an arithmetic number, because the mean of its divisors is an integer number (1778241654000).

Almost surely, 2^{121213121212020} is an apocalyptic number.

121213121212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121213121212020 is an abundant number, since it is smaller than the sum of its proper divisors (220209276355980).

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

121213121212020 is a wasteful number, since it uses less digits than its factorization.

121213121212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7738 (or 7736 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 121213121212020 its reverse (20212121312121), we get a palindrome (141425242524141).

The spelling of 121213121212020 in words is "one hundred twenty-one trillion, two hundred thirteen billion, one hundred twenty-one million, two hundred twelve thousand, twenty".