1212023331 has 20 divisors (see below), whose sum is σ = 1828491984. Its totient is φ = 800010000.

The previous prime is 1212023317. The next prime is 1212023339. The reversal of 1212023331 is 1333202121.

It is not a de Polignac number, because 1212023331 - 2²³ = 1203634723 is a prime.

It is a super-2 number, since 2×1212023331² = 2938001109776671122, which contains 22 as substring.

1212023331 is a modest number, since divided by 23331 gives 1212 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1212023339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65895 + ... + 82256.

Almost surely, 2^1212023331 is an apocalyptic number.

1212023331 is a deficient number, since it is larger than the sum of its proper divisors (616468653).

1212023331 is a wasteful number, since it uses less digits than its factorization.

1212023331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148264 (or 148255 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1212023331 is about 34814.1254521782. The cubic root of 1212023331 is about 1066.1958635935.

Adding to 1212023331 its reverse (1333202121), we get a palindrome (2545225452).

The spelling of 1212023331 in words is "one billion, two hundred twelve million, twenty-three thousand, three hundred thirty-one".