13121121223001 has 32 divisors (see below), whose sum is σ = 14495310661248. Its totient is φ = 11778407792640.

The previous prime is 13121121222997. The next prime is 13121121223037. The reversal of 13121121223001 is 10032212112131.

It is a cyclic number.

It is not a de Polignac number, because 13121121223001 - 2² = 13121121222997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121121220001) 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, 154365425 + ... + 154450401.

It is an arithmetic number, because the mean of its divisors is an integer number (452978458164).

Almost surely, 2^{13121121223001} is an apocalyptic number.

13121121223001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13121121223001 is a deficient number, since it is larger than the sum of its proper divisors (1374189438247).

13121121223001 is a wasteful number, since it uses less digits than its factorization.

13121121223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85721.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13121121223001 its reverse (10032212112131), we get a palindrome (23153333335132).

The spelling of 13121121223001 in words is "thirteen trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-three thousand, one".