13422021 has 8 divisors (see below), whose sum is σ = 18122880. Its totient is φ = 8834592.

The previous prime is 13422011. The next prime is 13422023. The reversal of 13422021 is 12022431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13422021 - 2⁹ = 13421509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13422023) 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 7 ways as a sum of consecutive naturals, for example, 28080 + ... + 28553.

It is an arithmetic number, because the mean of its divisors is an integer number (2265360).

Almost surely, 2^13422021 is an apocalyptic number.

It is an amenable number.

13422021 is a deficient number, since it is larger than the sum of its proper divisors (4700859).

13422021 is an equidigital number, since it uses as much as digits as its factorization.

13422021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56715.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13422021 is about 3663.6076482069. The cubic root of 13422021 is about 237.6508131695.

Adding to 13422021 its reverse (12022431), we get a palindrome (25444452).

It can be divided in two parts, 134 and 22021, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 13422021 in words is "thirteen million, four hundred twenty-two thousand, twenty-one".