121112202011212 has 24 divisors (see below), whose sum is σ = 215947861614576. Its totient is φ = 59412839648448.

The previous prime is 121112202011191. The next prime is 121112202011219. The reversal of 121112202011212 is 212110202211121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121112202011212.

It is not an unprimeable number, because it can be changed into a prime (121112202011219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15114043 + ... + 21694669.

It is an arithmetic number, because the mean of its divisors is an integer number (8997827567274).

Almost surely, 2^{121112202011212} is an apocalyptic number.

It is an amenable number.

121112202011212 is a deficient number, since it is larger than the sum of its proper divisors (94835659603364).

121112202011212 is a wasteful number, since it uses less digits than its factorization.

121112202011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667497 (or 6667495 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121112202011212 its reverse (212110202211121), we get a palindrome (333222404222333).

The spelling of 121112202011212 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred two million, eleven thousand, two hundred twelve".