121140140203 has 4 divisors (see below), whose sum is σ = 121141085400. Its totient is φ = 121139195008.

The previous prime is 121140140189. The next prime is 121140140269. The reversal of 121140140203 is 302041041121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121140140203 - 2⁹ = 121140139691 is a prime.

It is a super-3 number, since 3×121140140203³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121140140503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243253 + ... + 549046.

It is an arithmetic number, because the mean of its divisors is an integer number (30285271350).

Almost surely, 2^121140140203 is an apocalyptic number.

121140140203 is a deficient number, since it is larger than the sum of its proper divisors (945197).

121140140203 is an equidigital number, since it uses as much as digits as its factorization.

121140140203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945196.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121140140203 its reverse (302041041121), we get a palindrome (423181181324).

The spelling of 121140140203 in words is "one hundred twenty-one billion, one hundred forty million, one hundred forty thousand, two hundred three".