1201121212 has 6 divisors (see below), whose sum is σ = 2101962128. Its totient is φ = 600560604.

The previous prime is 1201121149. The next prime is 1201121219. The reversal of 1201121212 is 2121211021.

It is a junction number, because it is equal to n+sod(n) for n = 1201121192 and 1201121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201121219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150140148 + ... + 150140155.

Almost surely, 2^1201121212 is an apocalyptic number.

It is an amenable number.

1201121212 is a deficient number, since it is larger than the sum of its proper divisors (900840916).

1201121212 is a wasteful number, since it uses less digits than its factorization.

1201121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300280307 (or 300280305 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1201121212 is about 34657.1956742031. The cubic root of 1201121212 is about 1062.9894288084.

Adding to 1201121212 its reverse (2121211021), we get a palindrome (3322332233).

The spelling of 1201121212 in words is "one billion, two hundred one million, one hundred twenty-one thousand, two hundred twelve".