121012212 has 12 divisors (see below), whose sum is σ = 282361856. Its totient is φ = 40337400.

The previous prime is 121012211. The next prime is 121012217. The reversal of 121012212 is 212210121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 10084351 = 121012212 / (1 + 2 + 1 + 0 + 1 + 2 + 2 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5042164 + ... + 5042187.

Almost surely, 2^121012212 is an apocalyptic number.

121012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121012212 is an abundant number, since it is smaller than the sum of its proper divisors (161349644).

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

121012212 is a wasteful number, since it uses less digits than its factorization.

121012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10084358 (or 10084356 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 121012212 is about 11000.5550769041. Note that the first 3 decimals coincide. The cubic root of 121012212 is about 494.6253833298.

Adding to 121012212 its reverse (212210121), we get a palindrome (333222333).

The spelling of 121012212 in words is "one hundred twenty-one million, twelve thousand, two hundred twelve".