12200120021023 has 4 divisors (see below), whose sum is σ = 13309221841128. Its totient is φ = 11091018200920.

The previous prime is 12200120020967. The next prime is 12200120021059. The reversal of 12200120021023 is 32012002100221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12200120021023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200120020988 and 12200120021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200120024023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554550910036 + ... + 554550910057.

It is an arithmetic number, because the mean of its divisors is an integer number (3327305460282).

Almost surely, 2^{12200120021023} is an apocalyptic number.

12200120021023 is a deficient number, since it is larger than the sum of its proper divisors (1109101820105).

12200120021023 is a wasteful number, since it uses less digits than its factorization.

12200120021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109101820104.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12200120021023 its reverse (32012002100221), we get a palindrome (44212122121244).

The spelling of 12200120021023 in words is "twelve trillion, two hundred billion, one hundred twenty million, twenty-one thousand, twenty-three".