1201111011137 has 2 divisors, whose sum is σ = 1201111011138. Its totient is φ = 1201111011136.

The previous prime is 1201111011131. The next prime is 1201111011143. The reversal of 1201111011137 is 7311101111021.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1201111011131) and next prime (1201111011143).

It can be written as a sum of positive squares in only one way, i.e., 1197221118976 + 3889892161 = 1094176^2 + 62369^2 .

It is an emirp because it is prime and its reverse (7311101111021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201111011137 - 2¹⁴ = 1201110994753 is a prime.

It is a super-2 number, since 2×1201111011137² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201111011131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555505568 + 600555505569.

It is an arithmetic number, because the mean of its divisors is an integer number (600555505569).

Almost surely, 2^{1201111011137} is an apocalyptic number.

It is an amenable number.

1201111011137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201111011137 is an equidigital number, since it uses as much as digits as its factorization.

1201111011137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 20.

Adding to 1201111011137 its reverse (7311101111021), we get a palindrome (8512212122158).

The spelling of 1201111011137 in words is "one trillion, two hundred one billion, one hundred eleven million, eleven thousand, one hundred thirty-seven".