121120020001111 has 2 divisors, whose sum is σ = 121120020001112. Its totient is φ = 121120020001110.

The previous prime is 121120020001109. The next prime is 121120020001133. The reversal of 121120020001111 is 111100020021121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121120020001111 - 2¹ = 121120020001109 is a prime.

Together with 121120020001109, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121120020001091 and 121120020001100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121120020001171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560010000555 + 60560010000556.

It is an arithmetic number, because the mean of its divisors is an integer number (60560010000556).

Almost surely, 2^{121120020001111} is an apocalyptic number.

121120020001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120020001111 is an equidigital number, since it uses as much as digits as its factorization.

121120020001111 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 121120020001111 its reverse (111100020021121), we get a palindrome (232220040022232).

The spelling of 121120020001111 in words is "one hundred twenty-one trillion, one hundred twenty billion, twenty million, one thousand, one hundred eleven".