121320123100203 has 8 divisors (see below), whose sum is σ = 161776232532288. Its totient is φ = 80872047867464.

The previous prime is 121320123100199. The next prime is 121320123100237. The reversal of 121320123100203 is 302001321023121.

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 121320123100203 - 2² = 121320123100199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121320123100203.

It is not an unprimeable number, because it can be changed into a prime (121320123100103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008514601 + ... + 2008575002.

It is an arithmetic number, because the mean of its divisors is an integer number (20222029066536).

Almost surely, 2^{121320123100203} is an apocalyptic number.

121320123100203 is a deficient number, since it is larger than the sum of its proper divisors (40456109432085).

121320123100203 is a wasteful number, since it uses less digits than its factorization.

121320123100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017099673.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121320123100203 its reverse (302001321023121), we get a palindrome (423321444123324).

The spelling of 121320123100203 in words is "one hundred twenty-one trillion, three hundred twenty billion, one hundred twenty-three million, one hundred thousand, two hundred three".