1343220012 has 18 divisors (see below), whose sum is σ = 3395361788. Its totient is φ = 447739992.

The previous prime is 1343220001. The next prime is 1343220037. The reversal of 1343220012 is 2100223431.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18655798 + ... + 18655869.

Almost surely, 2^1343220012 is an apocalyptic number.

1343220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1343220012 is an abundant number, since it is smaller than the sum of its proper divisors (2052141776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1343220012 is a wasteful number, since it uses less digits than its factorization.

1343220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37311677 (or 37311672 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1343220012 is about 36649.9660572831. The cubic root of 1343220012 is about 1103.3561443447.

Adding to 1343220012 its reverse (2100223431), we get a palindrome (3443443443).

The spelling of 1343220012 in words is "one billion, three hundred forty-three million, two hundred twenty thousand, twelve".