21433402002012 has 384 divisors, whose sum is σ = 68616344832000. Its totient is φ = 5131529625600.

The previous prime is 21433402001981. The next prime is 21433402002013. The reversal of 21433402002012 is 21020020433412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433402002013) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 417283212 + ... + 417334572.

It is an arithmetic number, because the mean of its divisors is an integer number (178688398000).

Almost surely, 2^{21433402002012} is an apocalyptic number.

21433402002012 is a gapful number since it is divisible by the number (22) 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 21433402002012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34308172416000).

21433402002012 is an abundant number, since it is smaller than the sum of its proper divisors (47182942829988).

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

21433402002012 is a wasteful number, since it uses less digits than its factorization.

21433402002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52122 (or 52106 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21433402002012 its reverse (21020020433412), we get a palindrome (42453422435424).

The spelling of 21433402002012 in words is "twenty-one trillion, four hundred thirty-three billion, four hundred two million, two thousand, twelve".