11221626252656 has 20 divisors (see below), whose sum is σ = 21751594157832. Its totient is φ = 5608311631296.

The previous prime is 11221626252653. The next prime is 11221626252659. The reversal of 11221626252656 is 65625262612211.

It is an interprime number because it is at equal distance from previous prime (11221626252653) and next prime (11221626252659).

It is a super-2 number, since 2×11221626252656² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11221626252656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221626252653) 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 in 3 ways as a sum of consecutive naturals, for example, 156306431 + ... + 156378206.

Almost surely, 2^{11221626252656} is an apocalyptic number.

11221626252656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11221626252656 is a deficient number, since it is larger than the sum of its proper divisors (10529967905176).

11221626252656 is a wasteful number, since it uses less digits than its factorization.

11221626252656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312686888 (or 312686882 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 47.

Adding to 11221626252656 its reverse (65625262612211), we get a palindrome (76846888864867).

The spelling of 11221626252656 in words is "eleven trillion, two hundred twenty-one billion, six hundred twenty-six million, two hundred fifty-two thousand, six hundred fifty-six".