1211832151 has 2 divisors, whose sum is σ = 1211832152. Its totient is φ = 1211832150.

The previous prime is 1211832101. The next prime is 1211832157. The reversal of 1211832151 is 1512381121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211832151 - 2⁷ = 1211832023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211832157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605916075 + 605916076.

It is an arithmetic number, because the mean of its divisors is an integer number (605916076).

Almost surely, 2^1211832151 is an apocalyptic number.

1211832151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211832151 is an equidigital number, since it uses as much as digits as its factorization.

1211832151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 25.

The square root of 1211832151 is about 34811.3796193141. The cubic root of 1211832151 is about 1066.1398014044.

The spelling of 1211832151 in words is "one billion, two hundred eleven million, eight hundred thirty-two thousand, one hundred fifty-one".