1223111203222 has 4 divisors (see below), whose sum is σ = 1834666804836. Its totient is φ = 611555601610.

The previous prime is 1223111203157. The next prime is 1223111203243. The reversal of 1223111203222 is 2223021113221.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1223111203193 and 1223111203202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305777800804 + ... + 305777800807.

It is an arithmetic number, because the mean of its divisors is an integer number (458666701209).

Almost surely, 2^{1223111203222} is an apocalyptic number.

1223111203222 is a deficient number, since it is larger than the sum of its proper divisors (611555601614).

1223111203222 is an equidigital number, since it uses as much as digits as its factorization.

1223111203222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611555601613.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1223111203222 its reverse (2223021113221), we get a palindrome (3446132316443).

Subtracting 1223111203222 from its reverse (2223021113221), we obtain a palindrome (999909909999).

The spelling of 1223111203222 in words is "one trillion, two hundred twenty-three billion, one hundred eleven million, two hundred three thousand, two hundred twenty-two".