221020211020002 has 16 divisors (see below), whose sum is σ = 461259570824640. Its totient is φ = 70470212209232.

The previous prime is 221020211019983. The next prime is 221020211020031. The reversal of 221020211020002 is 200020112020122.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 800797865877 + ... + 800797866152.

It is an arithmetic number, because the mean of its divisors is an integer number (28828723176540).

Almost surely, 2^{221020211020002} is an apocalyptic number.

221020211020002 is an abundant number, since it is smaller than the sum of its proper divisors (240239359804638).

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

221020211020002 is a wasteful number, since it uses less digits than its factorization.

221020211020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601595732057.

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

Adding to 221020211020002 its reverse (200020112020122), we get a palindrome (421040323040124).

The spelling of 221020211020002 in words is "two hundred twenty-one trillion, twenty billion, two hundred eleven million, twenty thousand, two".