780020122200101 has 4 divisors (see below), whose sum is σ = 780024912964512. Its totient is φ = 780015331435692.

The previous prime is 780020122200083. The next prime is 780020122200181. The reversal of 780020122200101 is 101002221020087.

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 not a de Polignac number, because 780020122200101 - 2⁶ = 780020122200037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780020122200181) 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, 2395137971 + ... + 2395463616.

It is an arithmetic number, because the mean of its divisors is an integer number (195006228241128).

Almost surely, 2^{780020122200101} is an apocalyptic number.

It is an amenable number.

780020122200101 is a deficient number, since it is larger than the sum of its proper divisors (4790764411).

780020122200101 is a wasteful number, since it uses less digits than its factorization.

780020122200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790764410.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 780020122200101 its reverse (101002221020087), we get a palindrome (881022343220188).

The spelling of 780020122200101 in words is "seven hundred eighty trillion, twenty billion, one hundred twenty-two million, two hundred thousand, one hundred one".