21034051235 has 8 divisors (see below), whose sum is σ = 25777901376. Its totient is φ = 16469214400.

The previous prime is 21034051229. The next prime is 21034051249. The reversal of 21034051235 is 53215043012.

It is a happy number.

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

It is not a de Polignac number, because 21034051235 - 2¹⁴ = 21034034851 is a prime.

It is a super-2 number, since 2×21034051235² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44753066 + ... + 44753535.

It is an arithmetic number, because the mean of its divisors is an integer number (3222237672).

Almost surely, 2^21034051235 is an apocalyptic number.

21034051235 is a deficient number, since it is larger than the sum of its proper divisors (4743850141).

21034051235 is an equidigital number, since it uses as much as digits as its factorization.

21034051235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89506653.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 21034051235 its reverse (53215043012), we get a palindrome (74249094247).

The spelling of 21034051235 in words is "twenty-one billion, thirty-four million, fifty-one thousand, two hundred thirty-five".