221010010010 has 32 divisors (see below), whose sum is σ = 436962591360. Its totient is φ = 80109805248.

The previous prime is 221010009989. The next prime is 221010010019. The reversal of 221010010010 is 10010010122.

It is a self number, because there is not a number n which added to its sum of digits gives 221010010010.

It is not an unprimeable number, because it can be changed into a prime (221010010019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25282817 + ... + 25291556.

It is an arithmetic number, because the mean of its divisors is an integer number (13655080980).

Almost surely, 2^221010010010 is an apocalyptic number.

221010010010 is a deficient number, since it is larger than the sum of its proper divisors (215952581350).

221010010010 is a wasteful number, since it uses less digits than its factorization.

221010010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50574422.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 221010010010 its reverse (10010010122), we get a palindrome (231020020132).

The spelling of 221010010010 in words is "two hundred twenty-one billion, ten million, ten thousand, ten".