2221044948078 has 64 divisors (see below), whose sum is σ = 4850671288320. Its totient is φ = 672383909600.

The previous prime is 2221044948049. The next prime is 2221044948097. The reversal of 2221044948078 is 8708494401222.

It is a happy number.

It is a super-2 number, since 2×2221044948078² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221044948078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474681343 + ... + 474686021.

It is an arithmetic number, because the mean of its divisors is an integer number (75791738880).

Almost surely, 2^{2221044948078} is an apocalyptic number.

2221044948078 is an abundant number, since it is smaller than the sum of its proper divisors (2629626340242).

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

2221044948078 is a wasteful number, since it uses less digits than its factorization.

2221044948078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10213.

The product of its (nonzero) digits is 2064384, while the sum is 51.

The spelling of 2221044948078 in words is "two trillion, two hundred twenty-one billion, forty-four million, nine hundred forty-eight thousand, seventy-eight".