22002211123 has 4 divisors (see below), whose sum is σ = 22267298088. Its totient is φ = 21737124160.

The previous prime is 22002211117. The next prime is 22002211151. The reversal of 22002211123 is 32111220022.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22002211123 is a prime.

It is a super-2 number, since 2×22002211123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22002211097 and 22002211106.

It is not an unprimeable number, because it can be changed into a prime (22002211163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132543358 + ... + 132543523.

It is an arithmetic number, because the mean of its divisors is an integer number (5566824522).

Almost surely, 2^22002211123 is an apocalyptic number.

22002211123 is a deficient number, since it is larger than the sum of its proper divisors (265086965).

22002211123 is an equidigital number, since it uses as much as digits as its factorization.

22002211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265086964.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22002211123 its reverse (32111220022), we get a palindrome (54113431145).

The spelling of 22002211123 in words is "twenty-two billion, two million, two hundred eleven thousand, one hundred twenty-three".