21035232245 has 32 divisors (see below), whose sum is σ = 27023189760. Its totient is φ = 15680079360.

The previous prime is 21035232241. The next prime is 21035232259. The reversal of 21035232245 is 54223253012.

It is not a de Polignac number, because 21035232245 - 2² = 21035232241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21035232241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3481367 + ... + 3487403.

It is an arithmetic number, because the mean of its divisors is an integer number (844474680).

Almost surely, 2^21035232245 is an apocalyptic number.

It is an amenable number.

21035232245 is a deficient number, since it is larger than the sum of its proper divisors (5987957515).

21035232245 is a wasteful number, since it uses less digits than its factorization.

21035232245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6845.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 21035232245 its reverse (54223253012), we get a palindrome (75258485257).

The spelling of 21035232245 in words is "twenty-one billion, thirty-five million, two hundred thirty-two thousand, two hundred forty-five".