121221021222212 has 12 divisors (see below), whose sum is σ = 212748132349200. Its totient is φ = 60435840551016.

The previous prime is 121221021222137. The next prime is 121221021222263. The reversal of 121221021222212 is 212222120122121.

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, 43667513462 + ... + 43667516237.

It is an arithmetic number, because the mean of its divisors is an integer number (17729011029100).

Almost surely, 2^{121221021222212} is an apocalyptic number.

It is an amenable number.

121221021222212 is a deficient number, since it is larger than the sum of its proper divisors (91527111126988).

121221021222212 is a wasteful number, since it uses less digits than its factorization.

121221021222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87335030050 (or 87335030048 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121221021222212 its reverse (212222120122121), we get a palindrome (333443141344333).

The spelling of 121221021222212 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, two hundred twelve".