121010111212 has 36 divisors (see below), whose sum is σ = 225495171720. Its totient is φ = 56809798144.

The previous prime is 121010111197. The next prime is 121010111269. The reversal of 121010111212 is 212111010121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121010111192 and 121010111201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359448 + ... + 609280.

It is an arithmetic number, because the mean of its divisors is an integer number (6263754770).

Almost surely, 2^121010111212 is an apocalyptic number.

It is an amenable number.

121010111212 is a deficient number, since it is larger than the sum of its proper divisors (104485060508).

121010111212 is a wasteful number, since it uses less digits than its factorization.

121010111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250290 (or 250271 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121010111212 its reverse (212111010121), we get a palindrome (333121121333).

The spelling of 121010111212 in words is "one hundred twenty-one billion, ten million, one hundred eleven thousand, two hundred twelve".