21110222133 has 96 divisors (see below), whose sum is σ = 42222228480. Its totient is φ = 10122615360.

The previous prime is 21110222129. The next prime is 21110222171. The reversal of 21110222133 is 33122201112.

It is not a de Polignac number, because 21110222133 - 2² = 21110222129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110222033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 321310 + ... + 381392.

It is an arithmetic number, because the mean of its divisors is an integer number (439814880).

Almost surely, 2^21110222133 is an apocalyptic number.

It is an amenable number.

21110222133 is an abundant number, since it is smaller than the sum of its proper divisors (21112006347).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110222133 is a wasteful number, since it uses less digits than its factorization.

21110222133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60136 (or 60117 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21110222133 its reverse (33122201112), we get a palindrome (54232423245).

The spelling of 21110222133 in words is "twenty-one billion, one hundred ten million, two hundred twenty-two thousand, one hundred thirty-three".