22011121123 has 4 divisors (see below), whose sum is σ = 22105589688. Its totient is φ = 21916652560.

The previous prime is 22011121073. The next prime is 22011121129. The reversal of 22011121123 is 32112111022.

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

It is a cyclic number.

It is not a de Polignac number, because 22011121123 - 2²⁹ = 21474250211 is a prime.

It is a super-2 number, since 2×22011121123² (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 = 22011121097 and 22011121106.

It is not an unprimeable number, because it can be changed into a prime (22011121129) 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, 47233933 + ... + 47234398.

It is an arithmetic number, because the mean of its divisors is an integer number (5526397422).

Almost surely, 2^22011121123 is an apocalyptic number.

22011121123 is a deficient number, since it is larger than the sum of its proper divisors (94468565).

22011121123 is an equidigital number, since it uses as much as digits as its factorization.

22011121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94468564.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22011121123 its reverse (32112111022), we get a palindrome (54123232145).

The spelling of 22011121123 in words is "twenty-two billion, eleven million, one hundred twenty-one thousand, one hundred twenty-three".