2221111102028 has 24 divisors (see below), whose sum is σ = 4783931605152. Its totient is φ = 878681314944.

The previous prime is 2221111102027. The next prime is 2221111102109. The reversal of 2221111102028 is 8202011111222.

It is a junction number, because it is equal to n+sod(n) for n = 2221111101994 and 2221111102012.

It is not an unprimeable number, because it can be changed into a prime (2221111102027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050976425 + ... + 3050977152.

It is an arithmetic number, because the mean of its divisors is an integer number (199330483548).

Almost surely, 2^{2221111102028} is an apocalyptic number.

2221111102028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2221111102028 is an abundant number, since it is smaller than the sum of its proper divisors (2562820503124).

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

2221111102028 is a wasteful number, since it uses less digits than its factorization.

2221111102028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101953601 (or 6101953599 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The spelling of 2221111102028 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred two thousand, twenty-eight".