1212013443 has 16 divisors (see below), whose sum is σ = 1672646400. Its totient is φ = 779724960.

The previous prime is 1212013427. The next prime is 1212013483. The reversal of 1212013443 is 3443102121.

It is not a de Polignac number, because 1212013443 - 2⁴ = 1212013427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212013483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282448 + ... + 286706.

It is an arithmetic number, because the mean of its divisors is an integer number (104540400).

Almost surely, 2^1212013443 is an apocalyptic number.

1212013443 is a deficient number, since it is larger than the sum of its proper divisors (460632957).

1212013443 is a wasteful number, since it uses less digits than its factorization.

1212013443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7562.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1212013443 is about 34813.9834405659. The cubic root of 1212013443 is about 1066.1929641517.

Adding to 1212013443 its reverse (3443102121), we get a palindrome (4655115564).

The spelling of 1212013443 in words is "one billion, two hundred twelve million, thirteen thousand, four hundred forty-three".