20120320112218 has 16 divisors (see below), whose sum is σ = 30247614686016. Its totient is φ = 10037791320480.

The previous prime is 20120320112183. The next prime is 20120320112231. The reversal of 20120320112218 is 81221102302102.

It is a happy number.

It is a super-2 number, since 2×20120320112218² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120320112192 and 20120320112201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1911598 + ... + 6625318.

It is an arithmetic number, because the mean of its divisors is an integer number (1890475917876).

Almost surely, 2^{20120320112218} is an apocalyptic number.

20120320112218 is a deficient number, since it is larger than the sum of its proper divisors (10127294573798).

20120320112218 is a wasteful number, since it uses less digits than its factorization.

20120320112218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718469.

The product of its (nonzero) digits is 768, while the sum is 25.

The spelling of 20120320112218 in words is "twenty trillion, one hundred twenty billion, three hundred twenty million, one hundred twelve thousand, two hundred eighteen".