221001020012010 has 64 divisors (see below), whose sum is σ = 612175951390464. Its totient is φ = 50014375104000.

The previous prime is 221001020011997. The next prime is 221001020012039. The reversal of 221001020012010 is 10210020100122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5209809531 + ... + 5209851950.

It is an arithmetic number, because the mean of its divisors is an integer number (9565249240476).

Almost surely, 2^{221001020012010} is an apocalyptic number.

221001020012010 is an abundant number, since it is smaller than the sum of its proper divisors (391174931378454).

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

221001020012010 is a wasteful number, since it uses less digits than its factorization.

221001020012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10419661599.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221001020012010 its reverse (10210020100122), we get a palindrome (231211040112132).

The spelling of 221001020012010 in words is "two hundred twenty-one trillion, one billion, twenty million, twelve thousand, ten".