3021211213421 has 12 divisors (see below), whose sum is σ = 3074764674300. Its totient is φ = 2968575363648.

The previous prime is 3021211213393. The next prime is 3021211213451. The reversal of 3021211213421 is 1243121121203.

It can be written as a sum of positive squares in 2 ways, for example, as 1589692288900 + 1431518924521 = 1260830^2 + 1196461^2 .

It is not a de Polignac number, because 3021211213421 - 2¹⁸ = 3021210951277 is a prime.

It is a super-2 number, since 2×3021211213421² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3021211213451) 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, 7064075 + ... + 7479543.

It is an arithmetic number, because the mean of its divisors is an integer number (256230389525).

Almost surely, 2^{3021211213421} is an apocalyptic number.

It is an amenable number.

3021211213421 is a deficient number, since it is larger than the sum of its proper divisors (53553460879).

3021211213421 is an equidigital number, since it uses as much as digits as its factorization.

3021211213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417676 (or 417617 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 3021211213421 its reverse (1243121121203), we get a palindrome (4264332334624).

The spelling of 3021211213421 in words is "three trillion, twenty-one billion, two hundred eleven million, two hundred thirteen thousand, four hundred twenty-one".