21112110037 has 2 divisors, whose sum is σ = 21112110038. Its totient is φ = 21112110036.

The previous prime is 21112110031. The next prime is 21112110109. The reversal of 21112110037 is 73001121112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20624980996 + 487129041 = 143614^2 + 22071^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112110037 - 2¹⁹ = 21111585749 is a prime.

It is a super-2 number, since 2×21112110037² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21112109996 and 21112110023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112110031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556055018 + 10556055019.

It is an arithmetic number, because the mean of its divisors is an integer number (10556055019).

Almost surely, 2^21112110037 is an apocalyptic number.

It is an amenable number.

21112110037 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112110037 is an equidigital number, since it uses as much as digits as its factorization.

21112110037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 21112110037 its reverse (73001121112), we get a palindrome (94113231149).

The spelling of 21112110037 in words is "twenty-one billion, one hundred twelve million, one hundred ten thousand, thirty-seven".