1212020011178 has 16 divisors (see below), whose sum is σ = 1824318780480. Its totient is φ = 603916369056.

The previous prime is 1212020011177. The next prime is 1212020011187. The reversal of 1212020011178 is 8711100202121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1212020011177) 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, 273326 + ... + 1580742.

It is an arithmetic number, because the mean of its divisors is an integer number (114019923780).

Almost surely, 2^{1212020011178} is an apocalyptic number.

1212020011178 is a deficient number, since it is larger than the sum of its proper divisors (612298769302).

1212020011178 is a wasteful number, since it uses less digits than its factorization.

1212020011178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309021.

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

Adding to 1212020011178 its reverse (8711100202121), we get a palindrome (9923120213299).

The spelling of 1212020011178 in words is "one trillion, two hundred twelve billion, twenty million, eleven thousand, one hundred seventy-eight".