11121231115019 has 2 divisors, whose sum is σ = 11121231115020. Its totient is φ = 11121231115018.

The previous prime is 11121231114943. The next prime is 11121231115091. The reversal of 11121231115019 is 91051113212111.

11121231115019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (11121231115091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121231115019 is a prime.

It is a super-2 number, since 2×11121231115019² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11121231114982 and 11121231115000.

It is not a weakly prime, because it can be changed into another prime (11121231135019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560615557509 + 5560615557510.

It is an arithmetic number, because the mean of its divisors is an integer number (5560615557510).

Almost surely, 2^{11121231115019} is an apocalyptic number.

11121231115019 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121231115019 is an equidigital number, since it uses as much as digits as its factorization.

11121231115019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 29.

The spelling of 11121231115019 in words is "eleven trillion, one hundred twenty-one billion, two hundred thirty-one million, one hundred fifteen thousand, nineteen".