121211400000233 has 4 divisors (see below), whose sum is σ = 121224277030788. Its totient is φ = 121198522969680.

The previous prime is 121211400000161. The next prime is 121211400000281. The reversal of 121211400000233 is 332000004112121.

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 102792994361344 + 18418405638889 = 10138688^2 + 4291667^2 .

It is a cyclic number.

It is not a de Polignac number, because 121211400000233 - 2³⁰ = 121210326258409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211400000293) 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, 6438501158 + ... + 6438519983.

It is an arithmetic number, because the mean of its divisors is an integer number (30306069257697).

Almost surely, 2^{121211400000233} is an apocalyptic number.

It is an amenable number.

121211400000233 is a deficient number, since it is larger than the sum of its proper divisors (12877030555).

121211400000233 is an equidigital number, since it uses as much as digits as its factorization.

121211400000233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12877030554.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121211400000233 its reverse (332000004112121), we get a palindrome (453211404112354).

The spelling of 121211400000233 in words is "one hundred twenty-one trillion, two hundred eleven billion, four hundred million, two hundred thirty-three", and thus it is an aban number.