121201210212012 has 384 divisors, whose sum is σ = 373178282803200. Its totient is φ = 33288139987200.

The previous prime is 121201210211933. The next prime is 121201210212073. The reversal of 121201210212012 is 210212012102121.

121201210212012 is a `hidden beast` number, since 121 + 201 + 210 + 2 + 120 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3947521053 + ... + 3947551755.

It is an arithmetic number, because the mean of its divisors is an integer number (971818444800).

Almost surely, 2^{121201210212012} is an apocalyptic number.

121201210212012 is a gapful number since it is divisible by the number (12) 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 121201210212012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186589141401600).

121201210212012 is an abundant number, since it is smaller than the sum of its proper divisors (251977072591188).

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

121201210212012 is a wasteful number, since it uses less digits than its factorization.

121201210212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31874 (or 31866 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121201210212012 its reverse (210212012102121), we get a palindrome (331413222314133).

The spelling of 121201210212012 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred ten million, two hundred twelve thousand, twelve".