780020112120101 has 4 divisors (see below), whose sum is σ = 780024938810304. Its totient is φ = 780015285429900.

The previous prime is 780020112120047. The next prime is 780020112120113. The reversal of 780020112120101 is 101021211020087.

It is a happy number.

780020112120101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-780020112120101 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 (780020112120701) 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, 2413102685 + ... + 2413425906.

It is an arithmetic number, because the mean of its divisors is an integer number (195006234702576).

Almost surely, 2^{780020112120101} is an apocalyptic number.

It is an amenable number.

780020112120101 is a deficient number, since it is larger than the sum of its proper divisors (4826690203).

780020112120101 is a wasteful number, since it uses less digits than its factorization.

780020112120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826690202.

The product of its (nonzero) digits is 448, while the sum is 26.

Adding to 780020112120101 its reverse (101021211020087), we get a palindrome (881041323140188).

The spelling of 780020112120101 in words is "seven hundred eighty trillion, twenty billion, one hundred twelve million, one hundred twenty thousand, one hundred one".