121012021532111 has 2 divisors, whose sum is σ = 121012021532112. Its totient is φ = 121012021532110.

The previous prime is 121012021532099. The next prime is 121012021532113. The reversal of 121012021532111 is 111235120210121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121012021532111 - 2¹⁴ = 121012021515727 is a prime.

Together with 121012021532113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012021532113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506010766055 + 60506010766056.

It is an arithmetic number, because the mean of its divisors is an integer number (60506010766056).

Almost surely, 2^{121012021532111} is an apocalyptic number.

121012021532111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012021532111 is an equidigital number, since it uses as much as digits as its factorization.

121012021532111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 121012021532111 its reverse (111235120210121), we get a palindrome (232247141742232).

The spelling of 121012021532111 in words is "one hundred twenty-one trillion, twelve billion, twenty-one million, five hundred thirty-two thousand, one hundred eleven".