12123202655 has 16 divisors (see below), whose sum is σ = 14586998400. Its totient is φ = 9672499200.

The previous prime is 12123202579. The next prime is 12123202697. The reversal of 12123202655 is 55620232121.

It is not a de Polignac number, because 12123202655 - 2¹⁰ = 12123201631 is a prime.

It is a super-2 number, since 2×12123202655² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3640031 + ... + 3643359.

It is an arithmetic number, because the mean of its divisors is an integer number (911687400).

Almost surely, 2^12123202655 is an apocalyptic number.

12123202655 is a deficient number, since it is larger than the sum of its proper divisors (2463795745).

12123202655 is a wasteful number, since it uses less digits than its factorization.

12123202655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5074.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 12123202655 its reverse (55620232121), we get a palindrome (67743434776).

The spelling of 12123202655 in words is "twelve billion, one hundred twenty-three million, two hundred two thousand, six hundred fifty-five".