1223210321252 has 24 divisors (see below), whose sum is σ = 2186801089536. Its totient is φ = 598417604928.

The previous prime is 1223210321231. The next prime is 1223210321297. The reversal of 1223210321252 is 2521230123221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302228 + ... + 1593035.

It is an arithmetic number, because the mean of its divisors is an integer number (91116712064).

Almost surely, 2^{1223210321252} is an apocalyptic number.

It is an amenable number.

1223210321252 is a deficient number, since it is larger than the sum of its proper divisors (963590768284).

1223210321252 is a wasteful number, since it uses less digits than its factorization.

1223210321252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898747 (or 1898745 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1223210321252 its reverse (2521230123221), we get a palindrome (3744440444473).

The spelling of 1223210321252 in words is "one trillion, two hundred twenty-three billion, two hundred ten million, three hundred twenty-one thousand, two hundred fifty-two".