123121213322 has 16 divisors (see below), whose sum is σ = 185826715272. Its totient is φ = 61179271680.

The previous prime is 123121213307. The next prime is 123121213337. The reversal of 123121213322 is 223312121321.

It is an interprime number because it is at equal distance from previous prime (123121213307) and next prime (123121213337).

It can be written as a sum of positive squares in 4 ways, for example, as 78697641961 + 44423571361 = 280531^2 + 210769^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771698 + ... + 917474.

Almost surely, 2^123121213322 is an apocalyptic number.

123121213322 is a deficient number, since it is larger than the sum of its proper divisors (62705501950).

123121213322 is a wasteful number, since it uses less digits than its factorization.

123121213322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148393.

The product of its digits is 864, while the sum is 23.

Adding to 123121213322 its reverse (223312121321), we get a palindrome (346433334643).

The spelling of 123121213322 in words is "one hundred twenty-three billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred twenty-two".