121023111212 has 6 divisors (see below), whose sum is σ = 211790444628. Its totient is φ = 60511555604.

The previous prime is 121023111203. The next prime is 121023111229. The reversal of 121023111212 is 212111320121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15127888898 + ... + 15127888905.

It is an arithmetic number, because the mean of its divisors is an integer number (35298407438).

Almost surely, 2^121023111212 is an apocalyptic number.

It is an amenable number.

121023111212 is a deficient number, since it is larger than the sum of its proper divisors (90767333416).

121023111212 is a wasteful number, since it uses less digits than its factorization.

121023111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30255777807 (or 30255777805 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121023111212 its reverse (212111320121), we get a palindrome (333134431333).

The spelling of 121023111212 in words is "one hundred twenty-one billion, twenty-three million, one hundred eleven thousand, two hundred twelve".