1013213421 has 16 divisors (see below), whose sum is σ = 1637517120. Its totient is φ = 614068560.

The previous prime is 1013213419. The next prime is 1013213441. The reversal of 1013213421 is 1243123101.

1013213421 is a `hidden beast` number, since 1 + 0 + 1 + 321 + 342 + 1 = 666.

It is not a de Polignac number, because 1013213421 - 2¹ = 1013213419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013213394 and 1013213403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013213441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1705450 + ... + 1706043.

It is an arithmetic number, because the mean of its divisors is an integer number (102344820).

Almost surely, 2^1013213421 is an apocalyptic number.

1013213421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1013213421 is a deficient number, since it is larger than the sum of its proper divisors (624303699).

1013213421 is a wasteful number, since it uses less digits than its factorization.

1013213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411513 (or 3411507 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1013213421 is about 31831.0135088407. The cubic root of 1013213421 is about 1004.3852154428.

Adding to 1013213421 its reverse (1243123101), we get a palindrome (2256336522).

The spelling of 1013213421 in words is "one billion, thirteen million, two hundred thirteen thousand, four hundred twenty-one".