13002231232221 has 32 divisors (see below), whose sum is σ = 21704534323200. Its totient is φ = 6726144694080.

The previous prime is 13002231232201. The next prime is 13002231232327. The reversal of 13002231232221 is 12223213220031.

It is not a de Polignac number, because 13002231232221 - 2⁷ = 13002231232093 is a prime.

It is a super-2 number, since 2×13002231232221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13002231232191 and 13002231232200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13002231232201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117699426 + ... + 117809843.

It is an arithmetic number, because the mean of its divisors is an integer number (678266697600).

Almost surely, 2^{13002231232221} is an apocalyptic number.

13002231232221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13002231232221 is a deficient number, since it is larger than the sum of its proper divisors (8702303090979).

13002231232221 is a wasteful number, since it uses less digits than its factorization.

13002231232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235509529.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13002231232221 its reverse (12223213220031), we get a palindrome (25225444452252).

The spelling of 13002231232221 in words is "thirteen trillion, two billion, two hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-one".