2021421433304 has 32 divisors (see below), whose sum is σ = 4664818693920. Its totient is φ = 799683204096.

The previous prime is 2021421433253. The next prime is 2021421433309. The reversal of 2021421433304 is 4033341241202.

It is a super-2 number, since 2×2021421433304² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021421433309) 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, 1388338169 + ... + 1388339624.

It is an arithmetic number, because the mean of its divisors is an integer number (145775584185).

Almost surely, 2^{2021421433304} is an apocalyptic number.

It is an amenable number.

2021421433304 is an abundant number, since it is smaller than the sum of its proper divisors (2643397260616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021421433304 is a wasteful number, since it uses less digits than its factorization.

2021421433304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776677819 (or 2776677815 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 2021421433304 its reverse (4033341241202), we get a palindrome (6054762674506).

The spelling of 2021421433304 in words is "two trillion, twenty-one billion, four hundred twenty-one million, four hundred thirty-three thousand, three hundred four".