20413033021 has 8 divisors (see below), whose sum is σ = 21522468320. Its totient is φ = 19307104272.

The previous prime is 20413033019. The next prime is 20413033037. The reversal of 20413033021 is 12033031402.

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 20413033021 - 2¹ = 20413033019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20413033021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413033001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864675 + ... + 887968.

It is an arithmetic number, because the mean of its divisors is an integer number (2690308540).

Almost surely, 2^20413033021 is an apocalyptic number.

It is an amenable number.

20413033021 is a deficient number, since it is larger than the sum of its proper divisors (1109435299).

20413033021 is a wasteful number, since it uses less digits than its factorization.

20413033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753275.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20413033021 its reverse (12033031402), we get a palindrome (32446064423).

The spelling of 20413033021 in words is "twenty billion, four hundred thirteen million, thirty-three thousand, twenty-one".