2221097672 has 64 divisors (see below), whose sum is σ = 4501094400. Its totient is φ = 1024499520.

The previous prime is 2221097653. The next prime is 2221097677. The reversal of 2221097672 is 2767901222.

It is not an unprimeable number, because it can be changed into a prime (2221097677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2503613 + ... + 2504499.

It is an arithmetic number, because the mean of its divisors is an integer number (70329600).

Almost surely, 2^2221097672 is an apocalyptic number.

It is an amenable number.

2221097672 is an abundant number, since it is smaller than the sum of its proper divisors (2279996728).

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

2221097672 is a wasteful number, since it uses less digits than its factorization.

2221097672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 2221097672 is about 47128.5229134120. The cubic root of 2221097672 is about 1304.7357199844.

Adding to 2221097672 its reverse (2767901222), we get a palindrome (4988998894).

The spelling of 2221097672 in words is "two billion, two hundred twenty-one million, ninety-seven thousand, six hundred seventy-two".