82603984212121 has 4 divisors (see below), whose sum is σ = 84004051741200. Its totient is φ = 81203916683044.

The previous prime is 82603984212067. The next prime is 82603984212137. The reversal of 82603984212121 is 12121248930628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82603984212121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82603984222121) 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, 700033764451 + ... + 700033764568.

It is an arithmetic number, because the mean of its divisors is an integer number (21001012935300).

Almost surely, 2^{82603984212121} is an apocalyptic number.

It is an amenable number.

82603984212121 is a deficient number, since it is larger than the sum of its proper divisors (1400067529079).

82603984212121 is a wasteful number, since it uses less digits than its factorization.

82603984212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400067529078.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 82603984212121 in words is "eighty-two trillion, six hundred three billion, nine hundred eighty-four million, two hundred twelve thousand, one hundred twenty-one".