123202202320 has 20 divisors (see below), whose sum is σ = 286445120580. Its totient is φ = 49280880896.

The previous prime is 123202202317. The next prime is 123202202323. The reversal of 123202202320 is 23202202321.

It is an interprime number because it is at equal distance from previous prime (123202202317) and next prime (123202202323).

It can be written as a sum of positive squares in 2 ways, for example, as 65989389456 + 57212812864 = 256884^2 + 239192^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123202202323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770013685 + ... + 770013844.

It is an arithmetic number, because the mean of its divisors is an integer number (14322256029).

Almost surely, 2^123202202320 is an apocalyptic number.

123202202320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123202202320 is an abundant number, since it is smaller than the sum of its proper divisors (163242918260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123202202320 is a wasteful number, since it uses less digits than its factorization.

123202202320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540027542 (or 1540027536 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 123202202320 its reverse (23202202321), we get a palindrome (146404404641).

Subtracting from 123202202320 its reverse (23202202321), we obtain a palindrome (99999999999).

The spelling of 123202202320 in words is "one hundred twenty-three billion, two hundred two million, two hundred two thousand, three hundred twenty".