3021021421 has 4 divisors (see below), whose sum is σ = 3295659744. Its totient is φ = 2746383100.

The previous prime is 3021021391. The next prime is 3021021463. The reversal of 3021021421 is 1241201203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3021021421 - 2⁵ = 3021021389 is a prime.

It is a super-2 number, since 2×3021021421² = 18253140852281718482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3021021395 and 3021021404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3021021481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137319145 + ... + 137319166.

It is an arithmetic number, because the mean of its divisors is an integer number (823914936).

Almost surely, 2^3021021421 is an apocalyptic number.

It is an amenable number.

3021021421 is a deficient number, since it is larger than the sum of its proper divisors (274638323).

3021021421 is a wasteful number, since it uses less digits than its factorization.

3021021421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274638322.

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

The square root of 3021021421 is about 54963.8191995425. The cubic root of 3021021421 is about 1445.6104142316.

Adding to 3021021421 its reverse (1241201203), we get a palindrome (4262222624).

The spelling of 3021021421 in words is "three billion, twenty-one million, twenty-one thousand, four hundred twenty-one".