1213232220000 has 360 divisors, whose sum is σ = 4427826779376. Its totient is φ = 314782848000.

The previous prime is 1213232219989. The next prime is 1213232220001. The reversal of 1213232220000 is 222323121.

1213232220000 is a `hidden beast` number, since 1 + 213 + 232 + 220 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×1213232220000² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213232220001) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 6568917 + ... + 6751083.

Almost surely, 2^{1213232220000} is an apocalyptic number.

1213232220000 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 1213232220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2213913389688).

1213232220000 is an abundant number, since it is smaller than the sum of its proper divisors (3214594559376).

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

1213232220000 is a wasteful number, since it uses less digits than its factorization.

1213232220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182240 (or 182214 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1213232220000 its reverse (222323121), we get a palindrome (1213454543121).

The spelling of 1213232220000 in words is "one trillion, two hundred thirteen billion, two hundred thirty-two million, two hundred twenty thousand".