121323220233211 has 4 divisors (see below), whose sum is σ = 121323356504424. Its totient is φ = 121323083962000.

The previous prime is 121323220233167. The next prime is 121323220233217. The reversal of 121323220233211 is 112332022323121.

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

It is a cyclic number.

It is not a de Polignac number, because 121323220233211 - 2³⁵ = 121288860494843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121323220233211.

It is not an unprimeable number, because it can be changed into a prime (121323220233217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66791305 + ... + 68583706.

It is an arithmetic number, because the mean of its divisors is an integer number (30330839126106).

Almost surely, 2^{121323220233211} is an apocalyptic number.

121323220233211 is a deficient number, since it is larger than the sum of its proper divisors (136271213).

121323220233211 is an equidigital number, since it uses as much as digits as its factorization.

121323220233211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136271212.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 121323220233211 its reverse (112332022323121), we get a palindrome (233655242556332).

The spelling of 121323220233211 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, two hundred twenty million, two hundred thirty-three thousand, two hundred eleven".