21035233211 has 8 divisors (see below), whose sum is σ = 21983132160. Its totient is φ = 20090111272.

The previous prime is 21035233199. The next prime is 21035233223. The reversal of 21035233211 is 11233253012.

It is an interprime number because it is at equal distance from previous prime (21035233199) and next prime (21035233223).

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 21035233211 - 2²² = 21031038907 is a prime.

It is a super-3 number, since 3×21035233211³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21035233231) 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, 678755 + ... + 709068.

It is an arithmetic number, because the mean of its divisors is an integer number (2747891520).

Almost surely, 2^21035233211 is an apocalyptic number.

21035233211 is a deficient number, since it is larger than the sum of its proper divisors (947898949).

21035233211 is a wasteful number, since it uses less digits than its factorization.

21035233211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388505.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 21035233211 its reverse (11233253012), we get a palindrome (32268486223).

The spelling of 21035233211 in words is "twenty-one billion, thirty-five million, two hundred thirty-three thousand, two hundred eleven".