12121123201 has 32 divisors (see below), whose sum is σ = 13567276800. Its totient is φ = 10737377280.

The previous prime is 12121123193. The next prime is 12121123213. The reversal of 12121123201 is 10232112121.

It is a cyclic number.

It is not a de Polignac number, because 12121123201 - 2³ = 12121123193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121123271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27610540 + ... + 27610978.

It is an arithmetic number, because the mean of its divisors is an integer number (423977400).

Almost surely, 2^12121123201 is an apocalyptic number.

12121123201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12121123201 is a deficient number, since it is larger than the sum of its proper divisors (1446153599).

12121123201 is a wasteful number, since it uses less digits than its factorization.

12121123201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12121123201 its reverse (10232112121), we get a palindrome (22353235322).

The spelling of 12121123201 in words is "twelve billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred one".