121212011001020 has 24 divisors (see below), whose sum is σ = 260753643179568. Its totient is φ = 47302248195200.

The previous prime is 121212011000887. The next prime is 121212011001047. The reversal of 121212011001020 is 20100110212121.

It is a super-2 number, since 2×121212011001020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121212011000986 and 121212011001004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73909761986 + ... + 73909763625.

It is an arithmetic number, because the mean of its divisors is an integer number (10864735132482).

Almost surely, 2^{121212011001020} is an apocalyptic number.

121212011001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212011001020 is an abundant number, since it is smaller than the sum of its proper divisors (139541632178548).

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

121212011001020 is a wasteful number, since it uses less digits than its factorization.

121212011001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147819525661 (or 147819525659 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121212011001020 its reverse (20100110212121), we get a palindrome (141312121213141).

The spelling of 121212011001020 in words is "one hundred twenty-one trillion, two hundred twelve billion, eleven million, one thousand, twenty".