1220396542118 has 64 divisors (see below), whose sum is σ = 1995022612800. Its totient is φ = 556568064000.

The previous prime is 1220396542111. The next prime is 1220396542133. The reversal of 1220396542118 is 8112456930221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220396542111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467762798 + ... + 467765406.

It is an arithmetic number, because the mean of its divisors is an integer number (31172228325).

Almost surely, 2^{1220396542118} is an apocalyptic number.

1220396542118 is a deficient number, since it is larger than the sum of its proper divisors (774626070682).

1220396542118 is a wasteful number, since it uses less digits than its factorization.

1220396542118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 1220396542118 in words is "one trillion, two hundred twenty billion, three hundred ninety-six million, five hundred forty-two thousand, one hundred eighteen".