13272021 has 24 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 7547616.

The previous prime is 13271981. The next prime is 13272023. The reversal of 13272021 is 12027231.

13272021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13272021 - 2⁶ = 13271957 is a prime.

It is a super-2 number, since 2×13272021² = 352293082848882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13271985 and 13272003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13272023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18100 + ... + 18818.

It is an arithmetic number, because the mean of its divisors is an integer number (917280).

Almost surely, 2^13272021 is an apocalyptic number.

It is an amenable number.

13272021 is a deficient number, since it is larger than the sum of its proper divisors (8742699).

13272021 is a wasteful number, since it uses less digits than its factorization.

13272021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 13272021 is about 3643.0785058793. The cubic root of 13272021 is about 236.7621926968.

Adding to 13272021 its reverse (12027231), we get a palindrome (25299252).

The spelling of 13272021 in words is "thirteen million, two hundred seventy-two thousand, twenty-one".