11223233011221 has 64 divisors (see below), whose sum is σ = 18837031680000. Its totient is φ = 5774012375040.

The previous prime is 11223233011213. The next prime is 11223233011229. The reversal of 11223233011221 is 12211033232211.

It is an interprime number because it is at equal distance from previous prime (11223233011213) and next prime (11223233011229).

It is not a de Polignac number, because 11223233011221 - 2³ = 11223233011213 is a prime.

It is a super-2 number, since 2×11223233011221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11223233011191 and 11223233011200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223233011229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32430526 + ... + 32774768.

It is an arithmetic number, because the mean of its divisors is an integer number (294328620000).

Almost surely, 2^{11223233011221} is an apocalyptic number.

11223233011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11223233011221 is a deficient number, since it is larger than the sum of its proper divisors (7613798668779).

11223233011221 is a wasteful number, since it uses less digits than its factorization.

11223233011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345626.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 11223233011221 its reverse (12211033232211), we get a palindrome (23434266243432).

The spelling of 11223233011221 in words is "eleven trillion, two hundred twenty-three billion, two hundred thirty-three million, eleven thousand, two hundred twenty-one".