121240233211 has 2 divisors, whose sum is σ = 121240233212. Its totient is φ = 121240233210.

The previous prime is 121240233209. The next prime is 121240233217. The reversal of 121240233211 is 112332042121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121240233211 - 2¹ = 121240233209 is a prime.

Together with 121240233209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121240233217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60620116605 + 60620116606.

It is an arithmetic number, because the mean of its divisors is an integer number (60620116606).

Almost surely, 2^121240233211 is an apocalyptic number.

121240233211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121240233211 is an equidigital number, since it uses as much as digits as its factorization.

121240233211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 121240233211 its reverse (112332042121), we get a palindrome (233572275332).

The spelling of 121240233211 in words is "one hundred twenty-one billion, two hundred forty million, two hundred thirty-three thousand, two hundred eleven".