1212121348 has 6 divisors (see below), whose sum is σ = 2121212366. Its totient is φ = 606060672.

The previous prime is 1212121333. The next prime is 1212121357. The reversal of 1212121348 is 8431212121.

It can be written as a sum of positive squares in only one way, i.e., 943226944 + 268894404 = 30712^2 + 16398^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151515165 + ... + 151515172.

Almost surely, 2^1212121348 is an apocalyptic number.

It is an amenable number.

1212121348 is a deficient number, since it is larger than the sum of its proper divisors (909091018).

1212121348 is a wasteful number, since it uses less digits than its factorization.

1212121348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303030341 (or 303030339 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 1212121348 is about 34815.5331425500. The cubic root of 1212121348 is about 1066.2246041027.

Adding to 1212121348 its reverse (8431212121), we get a palindrome (9643333469).

The spelling of 1212121348 in words is "one billion, two hundred twelve million, one hundred twenty-one thousand, three hundred forty-eight".