780012200221 has 8 divisors (see below), whose sum is σ = 784381844664. Its totient is φ = 775646699520.

The previous prime is 780012200207. The next prime is 780012200287. The reversal of 780012200221 is 122002210087.

780012200221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 652338905625 + 127673294596 = 807675^2 + 357314^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 780012200221 - 2⁹ = 780012199709 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 (780012270221) 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, 658020 + ... + 1411741.

It is an arithmetic number, because the mean of its divisors is an integer number (98047730583).

Almost surely, 2^780012200221 is an apocalyptic number.

It is an amenable number.

780012200221 is a deficient number, since it is larger than the sum of its proper divisors (4369644443).

780012200221 is a wasteful number, since it uses less digits than its factorization.

780012200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071871.

The product of its (nonzero) digits is 896, while the sum is 25.

The spelling of 780012200221 in words is "seven hundred eighty billion, twelve million, two hundred thousand, two hundred twenty-one".