20210341021 has 16 divisors (see below), whose sum is σ = 23529721600. Its totient is φ = 17196141888.

The previous prime is 20210341003. The next prime is 20210341031. The reversal of 20210341021 is 12014301202.

It is a cyclic number.

It is not a de Polignac number, because 20210341021 - 2²⁵ = 20176786589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20210340986 and 20210341004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210341001) 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, 1096581 + ... + 1114858.

It is an arithmetic number, because the mean of its divisors is an integer number (1470607600).

Almost surely, 2^20210341021 is an apocalyptic number.

It is an amenable number.

20210341021 is a deficient number, since it is larger than the sum of its proper divisors (3319380579).

20210341021 is a wasteful number, since it uses less digits than its factorization.

20210341021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211508.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20210341021 its reverse (12014301202), we get a palindrome (32224642223).

The spelling of 20210341021 in words is "twenty billion, two hundred ten million, three hundred forty-one thousand, twenty-one".