121332031223 has 4 divisors (see below), whose sum is σ = 130665264408. Its totient is φ = 111998798040.

The previous prime is 121332031207. The next prime is 121332031243. The reversal of 121332031223 is 322130233121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322130233121 = 719 ⋅448025359.

It is a cyclic number.

It is not a de Polignac number, because 121332031223 - 2⁴ = 121332031207 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 (121332031243) 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, 4666616573 + ... + 4666616598.

It is an arithmetic number, because the mean of its divisors is an integer number (32666316102).

Almost surely, 2^121332031223 is an apocalyptic number.

121332031223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121332031223 is a deficient number, since it is larger than the sum of its proper divisors (9333233185).

121332031223 is an equidigital number, since it uses as much as digits as its factorization.

121332031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9333233184.

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

Adding to 121332031223 its reverse (322130233121), we get a palindrome (443462264344).

The spelling of 121332031223 in words is "one hundred twenty-one billion, three hundred thirty-two million, thirty-one thousand, two hundred twenty-three".