20120112278 has 16 divisors (see below), whose sum is σ = 34498288800. Its totient is φ = 8621238336.

The previous prime is 20120112277. The next prime is 20120112281. The reversal of 20120112278 is 87221102102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120112277) 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, 62453 + ... + 210096.

It is an arithmetic number, because the mean of its divisors is an integer number (2156143050).

Almost surely, 2^20120112278 is an apocalyptic number.

20120112278 is a deficient number, since it is larger than the sum of its proper divisors (14378176522).

20120112278 is a wasteful number, since it uses less digits than its factorization.

20120112278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277831.

The product of its (nonzero) digits is 896, while the sum is 26.

The spelling of 20120112278 in words is "twenty billion, one hundred twenty million, one hundred twelve thousand, two hundred seventy-eight".