121210011133 has 4 divisors (see below), whose sum is σ = 121228138620. Its totient is φ = 121191883648.

The previous prime is 121210011107. The next prime is 121210011157. The reversal of 121210011133 is 331110012121.

It is a happy number.

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 76863126564 + 44346884569 = 277242^2 + 210587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121210011133 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 (121210011163) 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, 9053710 + ... + 9067087.

It is an arithmetic number, because the mean of its divisors is an integer number (30307034655).

Almost surely, 2^121210011133 is an apocalyptic number.

It is an amenable number.

121210011133 is a deficient number, since it is larger than the sum of its proper divisors (18127487).

121210011133 is an equidigital number, since it uses as much as digits as its factorization.

121210011133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18127486.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121210011133 its reverse (331110012121), we get a palindrome (452320023254).

The spelling of 121210011133 in words is "one hundred twenty-one billion, two hundred ten million, eleven thousand, one hundred thirty-three".