11111322251 has 2 divisors, whose sum is σ = 11111322252. Its totient is φ = 11111322250.

The previous prime is 11111322199. The next prime is 11111322289. The reversal of 11111322251 is 15222311111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111322251 - 2¹⁴ = 11111305867 is a prime.

It is a super-2 number, since 2×11111322251² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11111322751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555661125 + 5555661126.

It is an arithmetic number, because the mean of its divisors is an integer number (5555661126).

Almost surely, 2^11111322251 is an apocalyptic number.

11111322251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111322251 is an equidigital number, since it uses as much as digits as its factorization.

11111322251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 20.

Adding to 11111322251 its reverse (15222311111), we get a palindrome (26333633362).

The spelling of 11111322251 in words is "eleven billion, one hundred eleven million, three hundred twenty-two thousand, two hundred fifty-one".