121332230213 has 4 divisors (see below), whose sum is σ = 121556504748. Its totient is φ = 121107955680.

The previous prime is 121332230197. The next prime is 121332230219. The reversal of 121332230213 is 312032233121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92785424449 + 28546805764 = 304607^2 + 168958^2 .

It is a cyclic number.

It is not a de Polignac number, because 121332230213 - 2⁴ = 121332230197 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 (121332230219) 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, 112136456 + ... + 112137537.

It is an arithmetic number, because the mean of its divisors is an integer number (30389126187).

Almost surely, 2^121332230213 is an apocalyptic number.

It is an amenable number.

121332230213 is a deficient number, since it is larger than the sum of its proper divisors (224274535).

121332230213 is an equidigital number, since it uses as much as digits as its factorization.

121332230213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224274534.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 121332230213 its reverse (312032233121), we get a palindrome (433364463334).

The spelling of 121332230213 in words is "one hundred twenty-one billion, three hundred thirty-two million, two hundred thirty thousand, two hundred thirteen".