121021013331212 has 12 divisors (see below), whose sum is σ = 211834291147080. Its totient is φ = 60496930146336.

The previous prime is 121021013331203. The next prime is 121021013331247. The reversal of 121021013331212 is 212133310120121.

It is a happy 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, 3394109762 + ... + 3394145417.

It is an arithmetic number, because the mean of its divisors is an integer number (17652857595590).

Almost surely, 2^{121021013331212} is an apocalyptic number.

It is an amenable number.

121021013331212 is a deficient number, since it is larger than the sum of its proper divisors (90813277815868).

121021013331212 is a wasteful number, since it uses less digits than its factorization.

121021013331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788259640 (or 6788259638 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121021013331212 its reverse (212133310120121), we get a palindrome (333154323451333).

The spelling of 121021013331212 in words is "one hundred twenty-one trillion, twenty-one billion, thirteen million, three hundred thirty-one thousand, two hundred twelve".