121012322111 has 2 divisors, whose sum is σ = 121012322112. Its totient is φ = 121012322110.

The previous prime is 121012322059. The next prime is 121012322149. The reversal of 121012322111 is 111223210121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121012322111 - 2¹⁸ = 121012059967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121012322111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012322411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506161055 + 60506161056.

It is an arithmetic number, because the mean of its divisors is an integer number (60506161056).

Almost surely, 2^121012322111 is an apocalyptic number.

121012322111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012322111 is an equidigital number, since it uses as much as digits as its factorization.

121012322111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121012322111 its reverse (111223210121), we get a palindrome (232235532232).

The spelling of 121012322111 in words is "one hundred twenty-one billion, twelve million, three hundred twenty-two thousand, one hundred eleven".