13022032121221 has 4 divisors (see below), whose sum is σ = 13104975001132. Its totient is φ = 12939089241312.

The previous prime is 13022032121209. The next prime is 13022032121261. The reversal of 13022032121221 is 12212123022031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7087867913025 + 5934164208196 = 2662305^2 + 2436014^2 .

It is a cyclic number.

It is not a de Polignac number, because 13022032121221 - 2⁷ = 13022032121093 is a prime.

It is a super-2 number, since 2×13022032121221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13022032121192 and 13022032121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13022032121261) 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, 41471439720 + ... + 41471440033.

It is an arithmetic number, because the mean of its divisors is an integer number (3276243750283).

Almost surely, 2^{13022032121221} is an apocalyptic number.

It is an amenable number.

13022032121221 is a deficient number, since it is larger than the sum of its proper divisors (82942879911).

13022032121221 is an equidigital number, since it uses as much as digits as its factorization.

13022032121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82942879910.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13022032121221 its reverse (12212123022031), we get a palindrome (25234155143252).

The spelling of 13022032121221 in words is "thirteen trillion, twenty-two billion, thirty-two million, one hundred twenty-one thousand, two hundred twenty-one".