20122201221078 has 64 divisors (see below), whose sum is σ = 47196937543680. Its totient is φ = 5653799776800.

The previous prime is 20122201221071. The next prime is 20122201221079. The reversal of 20122201221078 is 87012210222102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122201221071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170647578 + ... + 170765453.

It is an arithmetic number, because the mean of its divisors is an integer number (737452149120).

Almost surely, 2^{20122201221078} is an apocalyptic number.

20122201221078 is an abundant number, since it is smaller than the sum of its proper divisors (27074736322602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20122201221078 is a wasteful number, since it uses less digits than its factorization.

20122201221078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341413113.

The product of its (nonzero) digits is 3584, while the sum is 30.

The spelling of 20122201221078 in words is "twenty trillion, one hundred twenty-two billion, two hundred one million, two hundred twenty-one thousand, seventy-eight".