121121211212 has 6 divisors (see below), whose sum is σ = 211962119628. Its totient is φ = 60560605604.

The previous prime is 121121211149. The next prime is 121121211221. The reversal of 121121211212 is 212112121121.

121121211212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15140151398 + ... + 15140151405.

It is an arithmetic number, because the mean of its divisors is an integer number (35327019938).

Almost surely, 2^121121211212 is an apocalyptic number.

It is an amenable number.

121121211212 is a deficient number, since it is larger than the sum of its proper divisors (90840908416).

121121211212 is a wasteful number, since it uses less digits than its factorization.

121121211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30280302807 (or 30280302805 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 121121211212 its reverse (212112121121), we get a palindrome (333233332333).

Subtracting 121121211212 from its reverse (212112121121), we obtain a palindrome (90990909909).

It can be divided in two parts, 12112121121 and 2, that multiplied together give a palindrome (24224242242).

The spelling of 121121211212 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twelve".