121212101120000 has 260 divisors, whose sum is σ = 330432408357216. Its totient is φ = 44077117440000.

The previous prime is 121212101119933. The next prime is 121212101120023. The reversal of 121212101120000 is 21101212121.

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, 26007797 + ... + 30312203.

Almost surely, 2^{121212101120000} is an apocalyptic number.

121212101120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121212101120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165216204178608).

121212101120000 is an abundant number, since it is smaller than the sum of its proper divisors (209220307237216).

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

121212101120000 is an frugal number, since it uses more digits than its factorization.

121212101120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304462 (or 4304425 counting only the distinct ones).

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

Adding to 121212101120000 its reverse (21101212121), we get a palindrome (121233202332121).

The spelling of 121212101120000 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred one million, one hundred twenty thousand".