123121000202 has 8 divisors (see below), whose sum is σ = 184707900612. Its totient is φ = 61551700000.

The previous prime is 123121000201. The next prime is 123121000231. The reversal of 123121000202 is 202000121321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 115457923681 + 7663076521 = 339791^2 + 87539^2 .

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

It is not an unprimeable number, because it can be changed into a prime (123121000201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4382549 + ... + 4410552.

Almost surely, 2^123121000202 is an apocalyptic number.

123121000202 is a deficient number, since it is larger than the sum of its proper divisors (61586900410).

123121000202 is an equidigital number, since it uses as much as digits as its factorization.

123121000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8800104.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 123121000202 its reverse (202000121321), we get a palindrome (325121121523).

The spelling of 123121000202 in words is "one hundred twenty-three billion, one hundred twenty-one million, two hundred two", and thus it is an aban number.