121102011211 has 2 divisors, whose sum is σ = 121102011212. Its totient is φ = 121102011210.

The previous prime is 121102011187. The next prime is 121102011241. The reversal of 121102011211 is 112110201121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121102011211 - 2¹⁷ = 121101880139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121102011191 and 121102011200.

It is not a weakly prime, because it can be changed into another prime (121102011241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551005605 + 60551005606.

It is an arithmetic number, because the mean of its divisors is an integer number (60551005606).

Almost surely, 2^121102011211 is an apocalyptic number.

121102011211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102011211 is an equidigital number, since it uses as much as digits as its factorization.

121102011211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121102011211 its reverse (112110201121), we get a palindrome (233212212332).

The spelling of 121102011211 in words is "one hundred twenty-one billion, one hundred two million, eleven thousand, two hundred eleven".