12202402123 has 4 divisors (see below), whose sum is σ = 12623174640. Its totient is φ = 11781629608.

The previous prime is 12202402117. The next prime is 12202402139. The reversal of 12202402123 is 32120420221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32120420221 = 37087 ⋅866083.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12202402123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12202402123.

It is not an unprimeable number, because it can be changed into a prime (12202402153) 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, 210386215 + ... + 210386272.

It is an arithmetic number, because the mean of its divisors is an integer number (3155793660).

Almost surely, 2^12202402123 is an apocalyptic number.

12202402123 is a deficient number, since it is larger than the sum of its proper divisors (420772517).

12202402123 is an equidigital number, since it uses as much as digits as its factorization.

12202402123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420772516.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12202402123 its reverse (32120420221), we get a palindrome (44322822344).

The spelling of 12202402123 in words is "twelve billion, two hundred two million, four hundred two thousand, one hundred twenty-three".