1021314421 has 4 divisors (see below), whose sum is σ = 1022025600. Its totient is φ = 1020603244.

The previous prime is 1021314397. The next prime is 1021314439. The reversal of 1021314421 is 1244131201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1244131201 = 421 ⋅2955181.

It is a cyclic number.

It is not a de Polignac number, because 1021314421 - 2²³ = 1012925813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021314461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353431 + ... + 356308.

It is an arithmetic number, because the mean of its divisors is an integer number (255506400).

Almost surely, 2^1021314421 is an apocalyptic number.

It is an amenable number.

1021314421 is a deficient number, since it is larger than the sum of its proper divisors (711179).

1021314421 is an equidigital number, since it uses as much as digits as its factorization.

1021314421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711178.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1021314421 is about 31958.0102791147. The cubic root of 1021314421 is about 1007.0549180853.

Adding to 1021314421 its reverse (1244131201), we get a palindrome (2265445622).

It can be divided in two parts, 1021314 and 421, that added together give a triangular number (1021735 = T₁₄₂₉).

The spelling of 1021314421 in words is "one billion, twenty-one million, three hundred fourteen thousand, four hundred twenty-one".