11222124251 has 4 divisors (see below), whose sum is σ = 12085364592. Its totient is φ = 10358883912.

The previous prime is 11222124239. The next prime is 11222124257. The reversal of 11222124251 is 15242122211.

11222124251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11222124251 - 2¹⁴ = 11222107867 is a prime.

It is a super-2 number, since 2×11222124251² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222124257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431620151 + ... + 431620176.

It is an arithmetic number, because the mean of its divisors is an integer number (3021341148).

Almost surely, 2^11222124251 is an apocalyptic number.

11222124251 is a deficient number, since it is larger than the sum of its proper divisors (863240341).

11222124251 is an equidigital number, since it uses as much as digits as its factorization.

11222124251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863240340.

The product of its digits is 640, while the sum is 23.

Adding to 11222124251 its reverse (15242122211), we get a palindrome (26464246462).

The spelling of 11222124251 in words is "eleven billion, two hundred twenty-two million, one hundred twenty-four thousand, two hundred fifty-one".