203332320000121 has 16 divisors (see below), whose sum is σ = 229627139510160. Its totient is φ = 178736800435200.

The previous prime is 203332320000109. The next prime is 203332320000127. The reversal of 203332320000121 is 121000023233302.

It can be written as a sum of positive squares in 8 ways, for example, as 5345048068096 + 197987271932025 = 2311936^2 + 14070795^2 .

It is a cyclic number.

It is not a de Polignac number, because 203332320000121 - 2¹⁵ = 203332319967353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203332320000092 and 203332320000101.

It is not an unprimeable number, because it can be changed into a prime (203332320000127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3694102780 + ... + 3694157821.

It is an arithmetic number, because the mean of its divisors is an integer number (14351696219385).

Almost surely, 2^{203332320000121} is an apocalyptic number.

It is an amenable number.

203332320000121 is a deficient number, since it is larger than the sum of its proper divisors (26294819510039).

203332320000121 is a wasteful number, since it uses less digits than its factorization.

203332320000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7388260716.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 203332320000121 its reverse (121000023233302), we get a palindrome (324332343233423).

The spelling of 203332320000121 in words is "two hundred three trillion, three hundred thirty-two billion, three hundred twenty million, one hundred twenty-one", and thus it is an aban number.