121203023133 has 4 divisors (see below), whose sum is σ = 161604030848. Its totient is φ = 80802015420.

The previous prime is 121203023113. The next prime is 121203023141. The reversal of 121203023133 is 331320302121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121203023133 - 2²⁸ = 120934587677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121203023113) 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, 20200503853 + ... + 20200503858.

It is an arithmetic number, because the mean of its divisors is an integer number (40401007712).

Almost surely, 2^121203023133 is an apocalyptic number.

It is an amenable number.

121203023133 is a deficient number, since it is larger than the sum of its proper divisors (40401007715).

121203023133 is an equidigital number, since it uses as much as digits as its factorization.

121203023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40401007714.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 121203023133 its reverse (331320302121), we get a palindrome (452523325254).

The spelling of 121203023133 in words is "one hundred twenty-one billion, two hundred three million, twenty-three thousand, one hundred thirty-three".