21035106245 has 32 divisors (see below), whose sum is σ = 27617950080. Its totient is φ = 15324422400.

The previous prime is 21035106199. The next prime is 21035106259. The reversal of 21035106245 is 54260153012.

It is not a de Polignac number, because 21035106245 - 2⁸ = 21035105989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255695 + ... + 327795.

It is an arithmetic number, because the mean of its divisors is an integer number (863060940).

Almost surely, 2^21035106245 is an apocalyptic number.

It is an amenable number.

21035106245 is a deficient number, since it is larger than the sum of its proper divisors (6582843835).

21035106245 is a wasteful number, since it uses less digits than its factorization.

21035106245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72245.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 21035106245 its reverse (54260153012), we get a palindrome (75295259257).

The spelling of 21035106245 in words is "twenty-one billion, thirty-five million, one hundred six thousand, two hundred forty-five".