121244430211 has 2 divisors, whose sum is σ = 121244430212. Its totient is φ = 121244430210.

The previous prime is 121244430199. The next prime is 121244430221. The reversal of 121244430211 is 112034442121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121244430211 - 2²¹ = 121242333059 is a prime.

It is not a weakly prime, because it can be changed into another prime (121244430221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60622215105 + 60622215106.

It is an arithmetic number, because the mean of its divisors is an integer number (60622215106).

Almost surely, 2^121244430211 is an apocalyptic number.

121244430211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121244430211 is an equidigital number, since it uses as much as digits as its factorization.

121244430211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 121244430211 its reverse (112034442121), we get a palindrome (233278872332).

The spelling of 121244430211 in words is "one hundred twenty-one billion, two hundred forty-four million, four hundred thirty thousand, two hundred eleven".