21211210035 has 12 divisors (see below), whose sum is σ = 36766097472. Its totient is φ = 11312645328.

The previous prime is 21211210021. The next prime is 21211210037. The reversal of 21211210035 is 53001211212.

It is not a de Polignac number, because 21211210035 - 2⁷ = 21211209907 is a prime.

It is a super-2 number, since 2×21211210035² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21211210037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235680067 + ... + 235680156.

It is an arithmetic number, because the mean of its divisors is an integer number (3063841456).

Almost surely, 2^21211210035 is an apocalyptic number.

21211210035 is a deficient number, since it is larger than the sum of its proper divisors (15554887437).

21211210035 is a wasteful number, since it uses less digits than its factorization.

21211210035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471360234 (or 471360231 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 21211210035 its reverse (53001211212), we get a palindrome (74212421247).

The spelling of 21211210035 in words is "twenty-one billion, two hundred eleven million, two hundred ten thousand, thirty-five".