21430135033 has 8 divisors (see below), whose sum is σ = 21535557120. Its totient is φ = 21324972240.

The previous prime is 21430134961. The next prime is 21430135037. The reversal of 21430135033 is 33053103412.

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 21430135033 - 2¹⁷ = 21430003961 is a prime.

It is a super-2 number, since 2×21430135033² (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 = 21430134989 and 21430135007.

It is not an unprimeable number, because it can be changed into a prime (21430135037) 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, 101928 + ... + 230758.

It is an arithmetic number, because the mean of its divisors is an integer number (2691944640).

Almost surely, 2^21430135033 is an apocalyptic number.

It is an amenable number.

21430135033 is a deficient number, since it is larger than the sum of its proper divisors (105422087).

21430135033 is a wasteful number, since it uses less digits than its factorization.

21430135033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129647.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 21430135033 its reverse (33053103412), we get a palindrome (54483238445).

The spelling of 21430135033 in words is "twenty-one billion, four hundred thirty million, one hundred thirty-five thousand, thirty-three".