3421443021 has 32 divisors (see below), whose sum is σ = 4750921728. Its totient is φ = 2188399680.

The previous prime is 3421442987. The next prime is 3421443029. The reversal of 3421443021 is 1203441243.

It is not a de Polignac number, because 3421443021 - 2⁶ = 3421442957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3421442982 and 3421443000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421443029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3218136 + ... + 3219198.

It is an arithmetic number, because the mean of its divisors is an integer number (148466304).

Almost surely, 2^3421443021 is an apocalyptic number.

It is an amenable number.

3421443021 is a deficient number, since it is larger than the sum of its proper divisors (1329478707).

3421443021 is a wasteful number, since it uses less digits than its factorization.

3421443021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 3421443021 is about 58493.1023369423. The cubic root of 3421443021 is about 1506.8491262690.

Adding to 3421443021 its reverse (1203441243), we get a palindrome (4624884264).

The spelling of 3421443021 in words is "three billion, four hundred twenty-one million, four hundred forty-three thousand, twenty-one".