1221032203222 has 16 divisors (see below), whose sum is σ = 1983838011120. Its totient is φ = 560295788832.

The previous prime is 1221032203187. The next prime is 1221032203253. The reversal of 1221032203222 is 2223022301221.

It is a junction number, because it is equal to n+sod(n) for n = 1221032203193 and 1221032203202.

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, 135726072 + ... + 135735067.

It is an arithmetic number, because the mean of its divisors is an integer number (123989875695).

Almost surely, 2^{1221032203222} is an apocalyptic number.

1221032203222 is a deficient number, since it is larger than the sum of its proper divisors (762805807898).

1221032203222 is a wasteful number, since it uses less digits than its factorization.

1221032203222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271461327.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1221032203222 its reverse (2223022301221), we get a palindrome (3444054504443).

The spelling of 1221032203222 in words is "one trillion, two hundred twenty-one billion, thirty-two million, two hundred three thousand, two hundred twenty-two".