123220321202 has 12 divisors (see below), whose sum is σ = 203160777918. Its totient is φ = 56009236800.

The previous prime is 123220321171. The next prime is 123220321207. The reversal of 123220321202 is 202123022321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105793417081 + 17426904121 = 325259^2 + 132011^2 .

It is not an unprimeable number, because it can be changed into a prime (123220321207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254587199 + ... + 254587682.

Almost surely, 2^123220321202 is an apocalyptic number.

123220321202 is a deficient number, since it is larger than the sum of its proper divisors (79940456716).

123220321202 is a wasteful number, since it uses less digits than its factorization.

123220321202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509174905 (or 509174894 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 123220321202 its reverse (202123022321), we get a palindrome (325343343523).

The spelling of 123220321202 in words is "one hundred twenty-three billion, two hundred twenty million, three hundred twenty-one thousand, two hundred two".