78120011201 has 4 divisors (see below), whose sum is σ = 78122355504. Its totient is φ = 78117666900.

The previous prime is 78120011149. The next prime is 78120011213. The reversal of 78120011201 is 10211002187.

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 78120011201 - 2²² = 78115816897 is a prime.

It is a super-2 number, since 2×78120011201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78120011231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121435 + ... + 1189056.

It is an arithmetic number, because the mean of its divisors is an integer number (19530588876).

Almost surely, 2^78120011201 is an apocalyptic number.

It is an amenable number.

78120011201 is a deficient number, since it is larger than the sum of its proper divisors (2344303).

78120011201 is a wasteful number, since it uses less digits than its factorization.

78120011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344302.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 78120011201 its reverse (10211002187), we get a palindrome (88331013388).

The spelling of 78120011201 in words is "seventy-eight billion, one hundred twenty million, eleven thousand, two hundred one".