1212222321022 has 4 divisors (see below), whose sum is σ = 1818333481536. Its totient is φ = 606111160510.

The previous prime is 1212222320977. The next prime is 1212222321043. The reversal of 1212222321022 is 2201232222121.

It is a happy number.

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 = 1212222320984 and 1212222321002.

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, 303055580254 + ... + 303055580257.

It is an arithmetic number, because the mean of its divisors is an integer number (454583370384).

Almost surely, 2^{1212222321022} is an apocalyptic number.

1212222321022 is a deficient number, since it is larger than the sum of its proper divisors (606111160514).

1212222321022 is an equidigital number, since it uses as much as digits as its factorization.

1212222321022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606111160513.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1212222321022 its reverse (2201232222121), we get a palindrome (3413454543143).

The spelling of 1212222321022 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, three hundred twenty-one thousand, twenty-two".