1212203043 has 16 divisors (see below), whose sum is σ = 1800560640. Its totient is φ = 806018472.

The previous prime is 1212203029. The next prime is 1212203081. The reversal of 1212203043 is 3403022121.

It is not a de Polignac number, because 1212203043 - 2⁹ = 1212202531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212203243) 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, 48271 + ... + 68952.

It is an arithmetic number, because the mean of its divisors is an integer number (112535040).

Almost surely, 2^1212203043 is an apocalyptic number.

1212203043 is a deficient number, since it is larger than the sum of its proper divisors (588357597).

1212203043 is a wasteful number, since it uses less digits than its factorization.

1212203043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117615 (or 117609 counting only the distinct ones).

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

The square root of 1212203043 is about 34816.7063778296. The cubic root of 1212203043 is about 1066.2485574971.

Adding to 1212203043 its reverse (3403022121), we get a palindrome (4615225164).

The spelling of 1212203043 in words is "one billion, two hundred twelve million, two hundred three thousand, forty-three".