1222321001222 has 16 divisors (see below), whose sum is σ = 1941371148240. Its totient is φ = 575198684928.

The previous prime is 1222321001221. The next prime is 1222321001249. The reversal of 1222321001222 is 2221001232221.

It is a junction number, because it is equal to n+sod(n) for n = 1222321001194 and 1222321001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222321001221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575818 + ... + 2219874.

It is an arithmetic number, because the mean of its divisors is an integer number (121335696765).

Almost surely, 2^{1222321001222} is an apocalyptic number.

1222321001222 is a deficient number, since it is larger than the sum of its proper divisors (719050147018).

1222321001222 is a wasteful number, since it uses less digits than its factorization.

1222321001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699895.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1222321001222 its reverse (2221001232221), we get a palindrome (3443322233443).

The spelling of 1222321001222 in words is "one trillion, two hundred twenty-two billion, three hundred twenty-one million, one thousand, two hundred twenty-two".