1321001200222 has 16 divisors (see below), whose sum is σ = 2164434782832. Its totient is φ = 599678297920.

The previous prime is 1321001200157. The next prime is 1321001200237. The reversal of 1321001200222 is 2220021001231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1321001200196 and 1321001200205.

It is a congruent 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, 38822263 + ... + 38856274.

It is an arithmetic number, because the mean of its divisors is an integer number (135277173927).

Almost surely, 2^{1321001200222} is an apocalyptic number.

1321001200222 is a deficient number, since it is larger than the sum of its proper divisors (843433582610).

1321001200222 is a wasteful number, since it uses less digits than its factorization.

1321001200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77679323.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1321001200222 its reverse (2220021001231), we get a palindrome (3541022201453).

The spelling of 1321001200222 in words is "one trillion, three hundred twenty-one billion, one million, two hundred thousand, two hundred twenty-two".