121210012 has 24 divisors (see below), whose sum is σ = 264458880. Its totient is φ = 47224560.

The previous prime is 121210007. The next prime is 121210021. The reversal of 121210012 is 210012121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196462 + ... + 197077.

It is an arithmetic number, because the mean of its divisors is an integer number (11019120).

Almost surely, 2^121210012 is an apocalyptic number.

It is an amenable number.

121210012 is an abundant number, since it is smaller than the sum of its proper divisors (143248868).

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

121210012 is a wasteful number, since it uses less digits than its factorization.

121210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393561 (or 393559 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 121210012 is about 11009.5418614945. The cubic root of 121210012 is about 494.8947325722.

Adding to 121210012 its reverse (210012121), we get a palindrome (331222133).

It can be divided in two parts, 121 and 210012, that multiplied together give a palindrome (25411452).

The spelling of 121210012 in words is "one hundred twenty-one million, two hundred ten thousand, twelve".