111020220071 has 2 divisors, whose sum is σ = 111020220072. Its totient is φ = 111020220070.

The previous prime is 111020220053. The next prime is 111020220107. The reversal of 111020220071 is 170022020111.

Together with next prime (111020220107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111020220071 - 2⁶ = 111020220007 is a prime.

It is a super-2 number, since 2×111020220071² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111020228071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510110035 + 55510110036.

It is an arithmetic number, because the mean of its divisors is an integer number (55510110036).

Almost surely, 2^111020220071 is an apocalyptic number.

111020220071 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020220071 is an equidigital number, since it uses as much as digits as its factorization.

111020220071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 111020220071 its reverse (170022020111), we get a palindrome (281042240182).

The spelling of 111020220071 in words is "one hundred eleven billion, twenty million, two hundred twenty thousand, seventy-one".