1111221002051 has 2 divisors, whose sum is σ = 1111221002052. Its totient is φ = 1111221002050.

The previous prime is 1111221001997. The next prime is 1111221002077. The reversal of 1111221002051 is 1502001221111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111221002051 - 2³⁰ = 1110147260227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111221002351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555610501025 + 555610501026.

It is an arithmetic number, because the mean of its divisors is an integer number (555610501026).

Almost surely, 2^{1111221002051} is an apocalyptic number.

1111221002051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111221002051 is an equidigital number, since it uses as much as digits as its factorization.

1111221002051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 1111221002051 its reverse (1502001221111), we get a palindrome (2613222223162).

The spelling of 1111221002051 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, two thousand, fifty-one".