1233211533240 has 64 divisors (see below), whose sum is σ = 3744208540800. Its totient is φ = 324894280832.

The previous prime is 1233211533199. The next prime is 1233211533247. The reversal of 1233211533240 is 423351123321.

It is a super-3 number, since 3×1233211533240³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1233211533198 and 1233211533207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233211533247) 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 15 ways as a sum of consecutive naturals, for example, 61898250 + ... + 61918169.

It is an arithmetic number, because the mean of its divisors is an integer number (58503258450).

Almost surely, 2^{1233211533240} is an apocalyptic number.

1233211533240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1233211533240 is an abundant number, since it is smaller than the sum of its proper divisors (2510997007560).

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

1233211533240 is a wasteful number, since it uses less digits than its factorization.

1233211533240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123816516 (or 123816512 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 1233211533240 its reverse (423351123321), we get a palindrome (1656562656561).

It can be divided in two parts, 123321 and 1533240, that added together give a palindrome (1656561).

The spelling of 1233211533240 in words is "one trillion, two hundred thirty-three billion, two hundred eleven million, five hundred thirty-three thousand, two hundred forty".