20035352021 has 16 divisors (see below), whose sum is σ = 20605009920. Its totient is φ = 19475614080.

The previous prime is 20035351991. The next prime is 20035352041. The reversal of 20035352021 is 12025353002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20035352021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20035352041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513196 + ... + 1526378.

It is an arithmetic number, because the mean of its divisors is an integer number (1287813120).

Almost surely, 2^20035352021 is an apocalyptic number.

It is an amenable number.

20035352021 is a deficient number, since it is larger than the sum of its proper divisors (569657899).

20035352021 is a wasteful number, since it uses less digits than its factorization.

20035352021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13556.

The product of its (nonzero) digits is 1800, while the sum is 23.

The spelling of 20035352021 in words is "twenty billion, thirty-five million, three hundred fifty-two thousand, twenty-one".