121022021212111 has 2 divisors, whose sum is σ = 121022021212112. Its totient is φ = 121022021212110.

The previous prime is 121022021212091. The next prime is 121022021212117. The reversal of 121022021212111 is 111212120220121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121022021212111 - 2¹⁹ = 121022020687823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121022021212117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511010606055 + 60511010606056.

It is an arithmetic number, because the mean of its divisors is an integer number (60511010606056).

Almost surely, 2^{121022021212111} is an apocalyptic number.

121022021212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022021212111 is an equidigital number, since it uses as much as digits as its factorization.

121022021212111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121022021212111 its reverse (111212120220121), we get a palindrome (232234141432232).

The spelling of 121022021212111 in words is "one hundred twenty-one trillion, twenty-two billion, twenty-one million, two hundred twelve thousand, one hundred eleven".