21270203035 has 8 divisors (see below), whose sum is σ = 25525504656. Its totient is φ = 17015321760.

The previous prime is 21270202997. The next prime is 21270203041. The reversal of 21270203035 is 53030207212.

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

It is not a de Polignac number, because 21270203035 - 2¹⁹ = 21269678747 is a prime.

It is a super-2 number, since 2×21270203035² (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, 19717 + ... + 207193.

It is an arithmetic number, because the mean of its divisors is an integer number (3190688082).

Almost surely, 2^21270203035 is an apocalyptic number.

21270203035 is a deficient number, since it is larger than the sum of its proper divisors (4255301621).

21270203035 is a wasteful number, since it uses less digits than its factorization.

21270203035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210173.

The product of its (nonzero) digits is 2520, while the sum is 25.

The spelling of 21270203035 in words is "twenty-one billion, two hundred seventy million, two hundred three thousand, thirty-five".