21003143322252 has 192 divisors, whose sum is σ = 67226065966080. Its totient is φ = 4939057741824.

The previous prime is 21003143322209. The next prime is 21003143322257. The reversal of 21003143322252 is 25222334130012.

It is a super-2 number, since 2×21003143322252² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21003143322257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29420733 + ... + 30126164.

It is an arithmetic number, because the mean of its divisors is an integer number (350135760240).

Almost surely, 2^{21003143322252} is an apocalyptic number.

It is an amenable number.

21003143322252 is an abundant number, since it is smaller than the sum of its proper divisors (46222922643828).

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

21003143322252 is a wasteful number, since it uses less digits than its factorization.

21003143322252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59546960 (or 59546958 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21003143322252 its reverse (25222334130012), we get a palindrome (46225477452264).

The spelling of 21003143322252 in words is "twenty-one trillion, three billion, one hundred forty-three million, three hundred twenty-two thousand, two hundred fifty-two".