13121420133021 has 8 divisors (see below), whose sum is σ = 17573680776960. Its totient is φ = 8708386455552.

The previous prime is 13121420132999. The next prime is 13121420133043. The reversal of 13121420133021 is 12033102412131.

13121420133021 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 (13121420132999) and next prime (13121420133043).

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

It is not a de Polignac number, because 13121420133021 - 2¹⁰ = 13121420131997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13121420132982 and 13121420133000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121420131021) 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, 9806740836 + ... + 9806742173.

It is an arithmetic number, because the mean of its divisors is an integer number (2196710097120).

Almost surely, 2^{13121420133021} is an apocalyptic number.

It is an amenable number.

13121420133021 is a deficient number, since it is larger than the sum of its proper divisors (4452260643939).

13121420133021 is a wasteful number, since it uses less digits than its factorization.

13121420133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19613483235.

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

Adding to 13121420133021 its reverse (12033102412131), we get a palindrome (25154522545152).

The spelling of 13121420133021 in words is "thirteen trillion, one hundred twenty-one billion, four hundred twenty million, one hundred thirty-three thousand, twenty-one".