1201211002111 has 2 divisors, whose sum is σ = 1201211002112. Its totient is φ = 1201211002110.

The previous prime is 1201211002063. The next prime is 1201211002127. The reversal of 1201211002111 is 1112001121021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201211002111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201211002091 and 1201211002100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201211002811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600605501055 + 600605501056.

It is an arithmetic number, because the mean of its divisors is an integer number (600605501056).

Almost surely, 2^{1201211002111} is an apocalyptic number.

1201211002111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201211002111 is an equidigital number, since it uses as much as digits as its factorization.

1201211002111 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 1201211002111 its reverse (1112001121021), we get a palindrome (2313212123132).

The spelling of 1201211002111 in words is "one trillion, two hundred one billion, two hundred eleven million, two thousand, one hundred eleven".