1212002231 has 4 divisors (see below), whose sum is σ = 1322184264. Its totient is φ = 1101820200.

The previous prime is 1212002219. The next prime is 1212002237. The reversal of 1212002231 is 1322002121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212002231 - 2¹⁸ = 1211740087 is a prime.

It is a super-2 number, since 2×1212002231² = 2937898815897954722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212002237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55091000 + ... + 55091021.

It is an arithmetic number, because the mean of its divisors is an integer number (330546066).

Almost surely, 2^1212002231 is an apocalyptic number.

1212002231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212002231 is a deficient number, since it is larger than the sum of its proper divisors (110182033).

1212002231 is a wasteful number, since it uses less digits than its factorization.

1212002231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110182032.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1212002231 is about 34813.8224129440. The cubic root of 1212002231 is about 1066.1896764565.

Adding to 1212002231 its reverse (1322002121), we get a palindrome (2534004352).

The spelling of 1212002231 in words is "one billion, two hundred twelve million, two thousand, two hundred thirty-one".