121211100211000 has 64 divisors (see below), whose sum is σ = 283964937965280. Its totient is φ = 48427865132800.

The previous prime is 121211100210943. The next prime is 121211100211031. The reversal of 121211100211000 is 112001112121.

It is a happy number.

121211100211000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121211100211000² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69861262 + ... + 71575261.

Almost surely, 2^{121211100211000} is an apocalyptic number.

121211100211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121211100211000 is an abundant number, since it is smaller than the sum of its proper divisors (162753837754280).

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

121211100211000 is a wasteful number, since it uses less digits than its factorization.

121211100211000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141437401 (or 141437387 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121211100211000 its reverse (112001112121), we get a palindrome (121323101323121).

The spelling of 121211100211000 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred million, two hundred eleven thousand".