221001110012002 has 4 divisors (see below), whose sum is σ = 331501665018006. Its totient is φ = 110500555006000.

The previous prime is 221001110011973. The next prime is 221001110012027. The reversal of 221001110012002 is 200210011100122.

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., 214557488223961 + 6443621788041 = 14647781^2 + 2538429^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55250277502999 + ... + 55250277503002.

Almost surely, 2^{221001110012002} is an apocalyptic number.

221001110012002 is a deficient number, since it is larger than the sum of its proper divisors (110500555006004).

221001110012002 is a wasteful number, since it uses less digits than its factorization.

221001110012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110500555006003.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221001110012002 its reverse (200210011100122), we get a palindrome (421211121112124).

The spelling of 221001110012002 in words is "two hundred twenty-one trillion, one billion, one hundred ten million, twelve thousand, two".