2222111221078 has 32 divisors (see below), whose sum is σ = 4015251129600. Its totient is φ = 900989637984.

The previous prime is 2222111221049. The next prime is 2222111221079. The reversal of 2222111221078 is 8701221112222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222111221079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5455525 + ... + 5848672.

It is an arithmetic number, because the mean of its divisors is an integer number (125476597800).

Almost surely, 2^{2222111221078} is an apocalyptic number.

2222111221078 is a deficient number, since it is larger than the sum of its proper divisors (1793139908522).

2222111221078 is a wasteful number, since it uses less digits than its factorization.

2222111221078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11304964.

The product of its (nonzero) digits is 3584, while the sum is 31.

The spelling of 2222111221078 in words is "two trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, seventy-eight".