2221211028 has 24 divisors (see below), whose sum is σ = 5187077280. Its totient is φ = 739796320.

The previous prime is 2221211021. The next prime is 2221211029. The reversal of 2221211028 is 8201121222.

It is a junction number, because it is equal to n+sod(n) for n = 2221210995 and 2221211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221211021) 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, 60558 + ... + 90053.

It is an arithmetic number, because the mean of its divisors is an integer number (216128220).

Almost surely, 2^2221211028 is an apocalyptic number.

It is an amenable number.

2221211028 is an abundant number, since it is smaller than the sum of its proper divisors (2965866252).

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

2221211028 is a wasteful number, since it uses less digits than its factorization.

2221211028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151847 (or 151845 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 2221211028 is about 47129.7255243440. The cubic root of 2221211028 is about 1304.7579157825.

The spelling of 2221211028 in words is "two billion, two hundred twenty-one million, two hundred eleven thousand, twenty-eight".