121023231211 has 2 divisors, whose sum is σ = 121023231212. Its totient is φ = 121023231210.

The previous prime is 121023231209. The next prime is 121023231239. The reversal of 121023231211 is 112132320121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121023231211 - 2¹ = 121023231209 is a prime.

Together with 121023231209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121023231271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511615605 + 60511615606.

It is an arithmetic number, because the mean of its divisors is an integer number (60511615606).

Almost surely, 2^121023231211 is an apocalyptic number.

121023231211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121023231211 is an equidigital number, since it uses as much as digits as its factorization.

121023231211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121023231211 its reverse (112132320121), we get a palindrome (233155551332).

The spelling of 121023231211 in words is "one hundred twenty-one billion, twenty-three million, two hundred thirty-one thousand, two hundred eleven".