1221122303122 has 4 divisors (see below), whose sum is σ = 1831683454686. Its totient is φ = 610561151560.

The previous prime is 1221122303101. The next prime is 1221122303161. The reversal of 1221122303122 is 2213032211221.

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

It can be written as a sum of positive squares in only one way, i.e., 1112959590961 + 108162712161 = 1054969^2 + 328881^2 .

It is a super-2 number, since 2×1221122303122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221122303093 and 1221122303102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305280575779 + ... + 305280575782.

Almost surely, 2^{1221122303122} is an apocalyptic number.

1221122303122 is a deficient number, since it is larger than the sum of its proper divisors (610561151564).

1221122303122 is an equidigital number, since it uses as much as digits as its factorization.

1221122303122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610561151563.

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

Adding to 1221122303122 its reverse (2213032211221), we get a palindrome (3434154514343).

The spelling of 1221122303122 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-two million, three hundred three thousand, one hundred twenty-two".