1233221211012 has 96 divisors (see below), whose sum is σ = 3295347392512. Its totient is φ = 351625401216.

The previous prime is 1233221211011. The next prime is 1233221211017. The reversal of 1233221211012 is 2101121223321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1233221211012.

It is not an unprimeable number, because it can be changed into a prime (1233221211011) 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 31 ways as a sum of consecutive naturals, for example, 249991698 + ... + 249996630.

Almost surely, 2^{1233221211012} is an apocalyptic number.

1233221211012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1233221211012 is an abundant number, since it is smaller than the sum of its proper divisors (2062126181500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1233221211012 is a wasteful number, since it uses less digits than its factorization.

1233221211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10457 (or 10455 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1233221211012 its reverse (2101121223321), we get a palindrome (3334342434333).

The spelling of 1233221211012 in words is "one trillion, two hundred thirty-three billion, two hundred twenty-one million, two hundred eleven thousand, twelve".