12200121020021 has 8 divisors (see below), whose sum is σ = 13309687641888. Its totient is φ = 11090631850000.

The previous prime is 12200121019991. The next prime is 12200121020041. The reversal of 12200121020021 is 12002012100221.

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

It is a cyclic number.

It is not a de Polignac number, because 12200121020021 - 2³⁴ = 12182941150837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12200121019978 and 12200121020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200121020041) 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 7 ways as a sum of consecutive naturals, for example, 19033355 + ... + 19663896.

It is an arithmetic number, because the mean of its divisors is an integer number (1663710955236).

Almost surely, 2^{12200121020021} is an apocalyptic number.

12200121020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12200121020021 is a deficient number, since it is larger than the sum of its proper divisors (1109566621867).

12200121020021 is a wasteful number, since it uses less digits than its factorization.

12200121020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38725923.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12200121020021 its reverse (12002012100221), we get a palindrome (24202133120242).

The spelling of 12200121020021 in words is "twelve trillion, two hundred billion, one hundred twenty-one million, twenty thousand, twenty-one".