2221221200002 has 24 divisors (see below), whose sum is σ = 3876060653244. Its totient is φ = 951888988512.

The previous prime is 2221221199973. The next prime is 2221221200021. The reversal of 2221221200002 is 2000021221222.

It can be written as a sum of positive squares in 2 ways, for example, as 1778651662921 + 442569537081 = 1333661^2 + 665259^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 755328 + ... + 2238964.

Almost surely, 2^{2221221200002} is an apocalyptic number.

2221221200002 is a deficient number, since it is larger than the sum of its proper divisors (1654839453242).

2221221200002 is a wasteful number, since it uses less digits than its factorization.

2221221200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498930 (or 1498923 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2221221200002 its reverse (2000021221222), we get a palindrome (4221242421224).

The spelling of 2221221200002 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred thousand, two".