1212232159 has 2 divisors, whose sum is σ = 1212232160. Its totient is φ = 1212232158.

The previous prime is 1212232111. The next prime is 1212232187. The reversal of 1212232159 is 9512322121.

It is an a-pointer prime, because the next prime (1212232187) can be obtained adding 1212232159 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212232159 - 2²³ = 1203843551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212232759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606116079 + 606116080.

It is an arithmetic number, because the mean of its divisors is an integer number (606116080).

Almost surely, 2^1212232159 is an apocalyptic number.

1212232159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212232159 is an equidigital number, since it uses as much as digits as its factorization.

1212232159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 1212232159 is about 34817.1245079199. The cubic root of 1212232159 is about 1066.2570941980.

The spelling of 1212232159 in words is "one billion, two hundred twelve million, two hundred thirty-two thousand, one hundred fifty-nine".