20111011011037 has 2 divisors, whose sum is σ = 20111011011038. Its totient is φ = 20111011011036.

The previous prime is 20111011010983. The next prime is 20111011011071. The reversal of 20111011011037 is 73011011011102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16515535172761 + 3595475838276 = 4063931^2 + 1896174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111011011037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111011011137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055505505518 + 10055505505519.

It is an arithmetic number, because the mean of its divisors is an integer number (10055505505519).

Almost surely, 2^{20111011011037} is an apocalyptic number.

It is an amenable number.

20111011011037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111011011037 is an equidigital number, since it uses as much as digits as its factorization.

20111011011037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 19.

Adding to 20111011011037 its reverse (73011011011102), we get a palindrome (93122022022139).

The spelling of 20111011011037 in words is "twenty trillion, one hundred eleven billion, eleven million, eleven thousand, thirty-seven".