221002211211252 has 96 divisors (see below), whose sum is σ = 543195254784000. Its totient is φ = 69740968056192.

The previous prime is 221002211211151. The next prime is 221002211211253. The reversal of 221002211211252 is 252112112200122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002211211253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2455999053 + ... + 2456089035.

It is an arithmetic number, because the mean of its divisors is an integer number (5658283904000).

Almost surely, 2^{221002211211252} is an apocalyptic number.

It is an amenable number.

221002211211252 is an abundant number, since it is smaller than the sum of its proper divisors (322193043572748).

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

221002211211252 is a wasteful number, since it uses less digits than its factorization.

221002211211252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97485 (or 97483 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 221002211211252 its reverse (252112112200122), we get a palindrome (473114323411374).

The spelling of 221002211211252 in words is "two hundred twenty-one trillion, two billion, two hundred eleven million, two hundred eleven thousand, two hundred fifty-two".