1321001000222 has 32 divisors (see below), whose sum is σ = 2052273405024. Its totient is φ = 637325020800.

The previous prime is 1321001000201. The next prime is 1321001000251. The reversal of 1321001000222 is 2220001001231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1321001000197 and 1321001000206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83668613 + ... + 83684399.

It is an arithmetic number, because the mean of its divisors is an integer number (64133543907).

Almost surely, 2^{1321001000222} is an apocalyptic number.

1321001000222 is a deficient number, since it is larger than the sum of its proper divisors (731272404802).

1321001000222 is a wasteful number, since it uses less digits than its factorization.

1321001000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28844.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1321001000222 its reverse (2220001001231), we get a palindrome (3541002001453).

The spelling of 1321001000222 in words is "one trillion, three hundred twenty-one billion, one million, two hundred twenty-two", and thus it is an aban number.