121223210133 has 4 divisors (see below), whose sum is σ = 161630946848. Its totient is φ = 80815473420.

The previous prime is 121223210117. The next prime is 121223210153. The reversal of 121223210133 is 331012322121.

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 121223210133 - 2⁴ = 121223210117 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 (121223210153) 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, 20203868353 + ... + 20203868358.

It is an arithmetic number, because the mean of its divisors is an integer number (40407736712).

Almost surely, 2^121223210133 is an apocalyptic number.

It is an amenable number.

121223210133 is a deficient number, since it is larger than the sum of its proper divisors (40407736715).

121223210133 is an equidigital number, since it uses as much as digits as its factorization.

121223210133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40407736714.

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

Adding to 121223210133 its reverse (331012322121), we get a palindrome (452235532254).

The spelling of 121223210133 in words is "one hundred twenty-one billion, two hundred twenty-three million, two hundred ten thousand, one hundred thirty-three".