1223220213122 has 8 divisors (see below), whose sum is σ = 1834843792656. Its totient is φ = 611605615572.

The previous prime is 1223220213113. The next prime is 1223220213133. The reversal of 1223220213122 is 2213120223221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1223220213122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894028 + ... + 2456375.

It is an arithmetic number, because the mean of its divisors is an integer number (229355474082).

Almost surely, 2^{1223220213122} is an apocalyptic number.

1223220213122 is a deficient number, since it is larger than the sum of its proper divisors (611623579534).

1223220213122 is a wasteful number, since it uses less digits than its factorization.

1223220213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490992.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1223220213122 its reverse (2213120223221), we get a palindrome (3436340436343).

The spelling of 1223220213122 in words is "one trillion, two hundred twenty-three billion, two hundred twenty million, two hundred thirteen thousand, one hundred twenty-two".