121012220212 has 12 divisors (see below), whose sum is σ = 228061492036. Its totient is φ = 55851793920.

The previous prime is 121012220179. The next prime is 121012220221. The reversal of 121012220212 is 212022210121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78313783716 + 42698436496 = 279846^2 + 206636^2 .

It is a congruent number.

It is an unprimeable number.

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, 1163578989 + ... + 1163579092.

Almost surely, 2^121012220212 is an apocalyptic number.

It is an amenable number.

121012220212 is a deficient number, since it is larger than the sum of its proper divisors (107049271824).

121012220212 is a wasteful number, since it uses less digits than its factorization.

121012220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327158098 (or 2327158096 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121012220212 its reverse (212022210121), we get a palindrome (333034430333).

The spelling of 121012220212 in words is "one hundred twenty-one billion, twelve million, two hundred twenty thousand, two hundred twelve".