121212001120000 has 180 divisors, whose sum is σ = 345532994185456. Its totient is φ = 41558400000000.

The previous prime is 121212001119941. The next prime is 121212001120013. The reversal of 121212001120000 is 21100212121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52992501 + ... + 55232500.

Almost surely, 2^{121212001120000} is an apocalyptic number.

121212001120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212001120000 is an abundant number, since it is smaller than the sum of its proper divisors (224320993065456).

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

121212001120000 is an frugal number, since it uses more digits than its factorization.

121212001120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108225044 (or 108225015 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121212001120000 its reverse (21100212121), we get a palindrome (121233101332121).

The spelling of 121212001120000 in words is "one hundred twenty-one trillion, two hundred twelve billion, one million, one hundred twenty thousand".