11112120021031 has 2 divisors, whose sum is σ = 11112120021032. Its totient is φ = 11112120021030.

The previous prime is 11112120020933. The next prime is 11112120021043. The reversal of 11112120021031 is 13012002121111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11112120021031 - 2¹¹ = 11112120018983 is a prime.

It is a super-2 number, since 2×11112120021031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11112120020996 and 11112120021014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112120021091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556060010515 + 5556060010516.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060010516).

Almost surely, 2^{11112120021031} is an apocalyptic number.

11112120021031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112120021031 is an equidigital number, since it uses as much as digits as its factorization.

11112120021031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11112120021031 its reverse (13012002121111), we get a palindrome (24124122142142).

The spelling of 11112120021031 in words is "eleven trillion, one hundred twelve billion, one hundred twenty million, twenty-one thousand, thirty-one".