3421023021 has 12 divisors (see below), whose sum is σ = 5321591548. Its totient is φ = 2105244864.

The previous prime is 3421022993. The next prime is 3421023037. The reversal of 3421023021 is 1203201243.

It can be written as a sum of positive squares in 2 ways, for example, as 1798947396 + 1622075625 = 42414^2 + 40275^2 .

It is not a de Polignac number, because 3421023021 - 2⁵ = 3421022989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3421022985 and 3421023003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421023061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14619640 + ... + 14619873.

Almost surely, 2^3421023021 is an apocalyptic number.

It is an amenable number.

3421023021 is a deficient number, since it is larger than the sum of its proper divisors (1900568527).

3421023021 is a wasteful number, since it uses less digits than its factorization.

3421023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29239532 (or 29239529 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3421023021 is about 58489.5120598557. The cubic root of 3421023021 is about 1506.7874658792.

Adding to 3421023021 its reverse (1203201243), we get a palindrome (4624224264).

The spelling of 3421023021 in words is "three billion, four hundred twenty-one million, twenty-three thousand, twenty-one".