121220121000212 has 12 divisors (see below), whose sum is σ = 228453304962036. Its totient is φ = 55947748153920.

The previous prime is 121220121000163. The next prime is 121220121000281. The reversal of 121220121000212 is 212000121022121.

It can be written as a sum of positive squares in 2 ways, for example, as 12917885469316 + 108302235530896 = 3594146^2 + 10406836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165578086489 + ... + 1165578086592.

It is an arithmetic number, because the mean of its divisors is an integer number (19037775413503).

Almost surely, 2^{121220121000212} is an apocalyptic number.

It is an amenable number.

121220121000212 is a deficient number, since it is larger than the sum of its proper divisors (107233183961824).

121220121000212 is a wasteful number, since it uses less digits than its factorization.

121220121000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331156173098 (or 2331156173096 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121220121000212 its reverse (212000121022121), we get a palindrome (333220242022333).

The spelling of 121220121000212 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twelve", and thus it is an aban number.