2221100221002 has 48 divisors (see below), whose sum is σ = 4927515259968. Its totient is φ = 666746770560.

The previous prime is 2221100220991. The next prime is 2221100221003. The reversal of 2221100221002 is 2001220011222.

It is not an unprimeable number, because it can be changed into a prime (2221100221003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26671038 + ... + 26754185.

It is an arithmetic number, because the mean of its divisors is an integer number (102656567916).

Almost surely, 2^{2221100221002} is an apocalyptic number.

2221100221002 is an abundant number, since it is smaller than the sum of its proper divisors (2706415038966).

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

2221100221002 is a wasteful number, since it uses less digits than its factorization.

2221100221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53425295 (or 53425282 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2221100221002 its reverse (2001220011222), we get a palindrome (4222320232224).

The spelling of 2221100221002 in words is "two trillion, two hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, two".