21122134535 has 8 divisors (see below), whose sum is σ = 25379526480. Its totient is φ = 16875730944.

The previous prime is 21122134531. The next prime is 21122134541. The reversal of 21122134535 is 53543122112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21122134535 - 2² = 21122134531 is a prime.

It is a super-2 number, since 2×21122134535² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122134498 and 21122134507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122134531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2742857 + ... + 2750546.

It is an arithmetic number, because the mean of its divisors is an integer number (3172440810).

Almost surely, 2^21122134535 is an apocalyptic number.

21122134535 is a deficient number, since it is larger than the sum of its proper divisors (4257391945).

21122134535 is an equidigital number, since it uses as much as digits as its factorization.

21122134535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494177.

The product of its digits is 7200, while the sum is 29.

Adding to 21122134535 its reverse (53543122112), we get a palindrome (74665256647).

The spelling of 21122134535 in words is "twenty-one billion, one hundred twenty-two million, one hundred thirty-four thousand, five hundred thirty-five".