1232221212000 has 1152 divisors, whose sum is σ = 4771525449600. Its totient is φ = 300091392000.

The previous prime is 1232221211959. The next prime is 1232221212011. The reversal of 1232221212000 is 2121222321.

1232221212000 is a `hidden beast` number, since 1 + 232 + 221 + 212 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4580747866 + ... + 4580748134.

It is an arithmetic number, because the mean of its divisors is an integer number (4141949175).

Almost surely, 2^{1232221212000} is an apocalyptic number.

1232221212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1232221212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2385762724800).

1232221212000 is an abundant number, since it is smaller than the sum of its proper divisors (3539304237600).

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

1232221212000 is a wasteful number, since it uses less digits than its factorization.

1232221212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1232221212000 its reverse (2121222321), we get a palindrome (1234342434321).

The spelling of 1232221212000 in words is "one trillion, two hundred thirty-two billion, two hundred twenty-one million, two hundred twelve thousand".