121222120001111 has 2 divisors, whose sum is σ = 121222120001112. Its totient is φ = 121222120001110.

The previous prime is 121222120001051. The next prime is 121222120001189. The reversal of 121222120001111 is 111100021222121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121222120001111 - 2¹⁴ = 121222119984727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121222120001111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121222120007111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611060000555 + 60611060000556.

It is an arithmetic number, because the mean of its divisors is an integer number (60611060000556).

Almost surely, 2^{121222120001111} is an apocalyptic number.

121222120001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222120001111 is an equidigital number, since it uses as much as digits as its factorization.

121222120001111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121222120001111 its reverse (111100021222121), we get a palindrome (232322141223232).

The spelling of 121222120001111 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, one thousand, one hundred eleven".