22211111078 has 32 divisors (see below), whose sum is σ = 37161905760. Its totient is φ = 9897506976.

The previous prime is 22211111077. The next prime is 22211111113. The reversal of 22211111078 is 87011111222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211111071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616601 + ... + 651627.

It is an arithmetic number, because the mean of its divisors is an integer number (1161309555).

Almost surely, 2^22211111078 is an apocalyptic number.

22211111078 is a deficient number, since it is larger than the sum of its proper divisors (14950794682).

22211111078 is an equidigital number, since it uses as much as digits as its factorization.

22211111078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35129 (or 35071 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 26.

The spelling of 22211111078 in words is "twenty-two billion, two hundred eleven million, one hundred eleven thousand, seventy-eight".