2221100010002 has 4 divisors (see below), whose sum is σ = 3331650015006. Its totient is φ = 1110550005000.

The previous prime is 2221100009941. The next prime is 2221100010007. The reversal of 2221100010002 is 2000100011222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2216373585001 + 4726425001 = 1488749^2 + 68749^2 .

It is not an unprimeable number, because it can be changed into a prime (2221100010007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555275002499 + ... + 555275002502.

Almost surely, 2^{2221100010002} is an apocalyptic number.

2221100010002 is a deficient number, since it is larger than the sum of its proper divisors (1110550005004).

2221100010002 is a wasteful number, since it uses less digits than its factorization.

2221100010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110550005003.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2221100010002 its reverse (2000100011222), we get a palindrome (4221200021224).

The spelling of 2221100010002 in words is "two trillion, two hundred twenty-one billion, one hundred million, ten thousand, two".