2221973712 has 240 divisors, whose sum is σ = 7591514112. Its totient is φ = 592220160.

The previous prime is 2221973693. The next prime is 2221973713. The reversal of 2221973712 is 2173791222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221973713) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2175762 + ... + 2176782.

Almost surely, 2^2221973712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221973712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3795757056).

2221973712 is an abundant number, since it is smaller than the sum of its proper divisors (5369540400).

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

2221973712 is a wasteful number, since it uses less digits than its factorization.

2221973712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1177 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 2221973712 is about 47137.8161564577. The cubic root of 2221973712 is about 1304.9072343448.

The spelling of 2221973712 in words is "two billion, two hundred twenty-one million, nine hundred seventy-three thousand, seven hundred twelve".