78801200122111 has 8 divisors (see below), whose sum is σ = 79245220649504. Its totient is φ = 78357274702560.

The previous prime is 78801200122063. The next prime is 78801200122121. The reversal of 78801200122111 is 11122100210887.

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 78801200122111 - 2¹³ = 78801200113919 is a prime.

It is a super-2 number, since 2×78801200122111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78801200122121) 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, 22114875 + ... + 25429708.

It is an arithmetic number, because the mean of its divisors is an integer number (9905652581188).

Almost surely, 2^{78801200122111} is an apocalyptic number.

78801200122111 is a deficient number, since it is larger than the sum of its proper divisors (444020527393).

78801200122111 is a wasteful number, since it uses less digits than its factorization.

78801200122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47553921.

The product of its (nonzero) digits is 3584, while the sum is 34.

Adding to 78801200122111 its reverse (11122100210887), we get a palindrome (89923300332998).

The spelling of 78801200122111 in words is "seventy-eight trillion, eight hundred one billion, two hundred million, one hundred twenty-two thousand, one hundred eleven".