13321023212121 has 8 divisors (see below), whose sum is σ = 18806150417184. Its totient is φ = 8358289074240.

The previous prime is 13321023212089. The next prime is 13321023212153. The reversal of 13321023212121 is 12121232012331.

13321023212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13321023212089) and next prime (13321023212153).

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

It is not a de Polignac number, because 13321023212121 - 2⁵ = 13321023212089 is a prime.

It is a super-2 number, since 2×13321023212121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13321023212091 and 13321023212100.

It is not an unprimeable number, because it can be changed into a prime (13321023212221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130598266735 + ... + 130598266836.

It is an arithmetic number, because the mean of its divisors is an integer number (2350768802148).

Almost surely, 2^{13321023212121} is an apocalyptic number.

It is an amenable number.

13321023212121 is a deficient number, since it is larger than the sum of its proper divisors (5485127205063).

13321023212121 is a wasteful number, since it uses less digits than its factorization.

13321023212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261196533591.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13321023212121 its reverse (12121232012331), we get a palindrome (25442255224452).

The spelling of 13321023212121 in words is "thirteen trillion, three hundred twenty-one billion, twenty-three million, two hundred twelve thousand, one hundred twenty-one".