2221021012 has 12 divisors (see below), whose sum is σ = 4442042080. Its totient is φ = 951866136.

The previous prime is 2221021003. The next prime is 2221021027. The reversal of 2221021012 is 2101201222.

It is a happy number.

2221021012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2221020983 and 2221021001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39661062 + ... + 39661117.

Almost surely, 2^2221021012 is an apocalyptic number.

It is an amenable number.

2221021012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2221021012 is a wasteful number, since it uses less digits than its factorization.

2221021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79322190 (or 79322188 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2221021012 is about 47127.7095984942. The cubic root of 2221021012 is about 1304.7207090595.

Adding to 2221021012 its reverse (2101201222), we get a palindrome (4322222234).

The spelling of 2221021012 in words is "two billion, two hundred twenty-one million, twenty-one thousand, twelve".