21035542235 has 8 divisors (see below), whose sum is σ = 25266403680. Its totient is φ = 16812598464.

The previous prime is 21035542207. The next prime is 21035542247. The reversal of 21035542235 is 53224553012.

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 21035542235 - 2⁸ = 21035541979 is a prime.

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, 1973570 + ... + 1984199.

It is an arithmetic number, because the mean of its divisors is an integer number (3158300460).

Almost surely, 2^21035542235 is an apocalyptic number.

21035542235 is a deficient number, since it is larger than the sum of its proper divisors (4230861445).

21035542235 is a wasteful number, since it uses less digits than its factorization.

21035542235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958837.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 21035542235 in words is "twenty-one billion, thirty-five million, five hundred forty-two thousand, two hundred thirty-five".