221000020010 has 96 divisors (see below), whose sum is σ = 509814311040. Its totient is φ = 68200944000.

The previous prime is 221000020001. The next prime is 221000020081. The reversal of 221000020010 is 10020000122.

It is a self number, because there is not a number n which added to its sum of digits gives 221000020010.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 341411 + ... + 747369.

It is an arithmetic number, because the mean of its divisors is an integer number (5310565740).

Almost surely, 2^221000020010 is an apocalyptic number.

221000020010 is an abundant number, since it is smaller than the sum of its proper divisors (288814291030).

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

221000020010 is a wasteful number, since it uses less digits than its factorization.

221000020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406092 (or 406085 counting only the distinct ones).

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

Adding to 221000020010 its reverse (10020000122), we get a palindrome (231020020132).

The spelling of 221000020010 in words is "two hundred twenty-one billion, twenty thousand, ten".