11112221212051 has 2 divisors, whose sum is σ = 11112221212052. Its totient is φ = 11112221212050.

The previous prime is 11112221211989. The next prime is 11112221212109. The reversal of 11112221212051 is 15021212221111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11112221212051 - 2³⁵ = 11077861473683 is a prime.

It is not a weakly prime, because it can be changed into another prime (11112221212451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556110606025 + 5556110606026.

It is an arithmetic number, because the mean of its divisors is an integer number (5556110606026).

Almost surely, 2^{11112221212051} is an apocalyptic number.

11112221212051 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112221212051 is an equidigital number, since it uses as much as digits as its factorization.

11112221212051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 22.

Adding to 11112221212051 its reverse (15021212221111), we get a palindrome (26133433433162).

The spelling of 11112221212051 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, fifty-one".