1214155612 has 24 divisors (see below), whose sum is σ = 2144748032. Its totient is φ = 601398000.

The previous prime is 1214155603. The next prime is 1214155619. The reversal of 1214155612 is 2165514121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214155619) 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, 184987 + ... + 191437.

Almost surely, 2^1214155612 is an apocalyptic number.

It is an amenable number.

1214155612 is a deficient number, since it is larger than the sum of its proper divisors (930592420).

1214155612 is a wasteful number, since it uses less digits than its factorization.

1214155612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889 (or 6887 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 1214155612 is about 34844.7357860553. The cubic root of 1214155612 is about 1066.8207408080.

Adding to 1214155612 its reverse (2165514121), we get a palindrome (3379669733).

The spelling of 1214155612 in words is "one billion, two hundred fourteen million, one hundred fifty-five thousand, six hundred twelve".