22211123 has 18 divisors (see below), whose sum is σ = 25595052. Its totient is φ = 19258360.

The previous prime is 22211099. The next prime is 22211131. The reversal of 22211123 is 32111222.

It is a happy number.

It is not a de Polignac number, because 22211123 - 2¹² = 22207027 is a prime.

It is a super-2 number, since 2×22211123² = 986667969842258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22211098 and 22211107.

It is not an unprimeable number, because it can be changed into a prime (22211153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 63836 + ... + 64182.

Almost surely, 2^22211123 is an apocalyptic number.

22211123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22211123 is a deficient number, since it is larger than the sum of its proper divisors (3383929).

22211123 is a wasteful number, since it uses less digits than its factorization.

22211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 381 counting only the distinct ones).

The product of its digits is 48, while the sum is 14.

The square root of 22211123 is about 4712.8678105799. The cubic root of 22211123 is about 281.0974067393.

Adding to 22211123 its reverse (32111222), we get a palindrome (54322345).

Subtracting 22211123 from its reverse (32111222), we obtain a palindrome (9900099).

It can be divided in two parts, 22211 and 123, that multiplied together give a triangular number (2731953 = T₂₃₃₇).

The spelling of 22211123 in words is "twenty-two million, two hundred eleven thousand, one hundred twenty-three".