13102211112121 has 4 divisors (see below), whose sum is σ = 13872929412852. Its totient is φ = 12331492811392.

The previous prime is 13102211112103. The next prime is 13102211112131. The reversal of 13102211112121 is 12121111220131.

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 4462491476521 + 8639719635600 = 2112461^2 + 2939340^2 .

It is a cyclic number.

It is not a de Polignac number, because 13102211112121 - 2³¹ = 13100063628473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13102211112131) 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, 385359150340 + ... + 385359150373.

It is an arithmetic number, because the mean of its divisors is an integer number (3468232353213).

Almost surely, 2^{13102211112121} is an apocalyptic number.

It is an amenable number.

13102211112121 is a deficient number, since it is larger than the sum of its proper divisors (770718300731).

13102211112121 is an equidigital number, since it uses as much as digits as its factorization.

13102211112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770718300730.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 13102211112121 its reverse (12121111220131), we get a palindrome (25223322332252).

The spelling of 13102211112121 in words is "thirteen trillion, one hundred two billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty-one".