221000111002 has 16 divisors (see below), whose sum is σ = 362417634432. Its totient is φ = 100237626720.

The previous prime is 221000110999. The next prime is 221000111039. The reversal of 221000111002 is 200111000122.

It is a self number, because there is not a number n which added to its sum of digits gives 221000111002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10838043 + ... + 10858414.

It is an arithmetic number, because the mean of its divisors is an integer number (22651102152).

Almost surely, 2^221000111002 is an apocalyptic number.

221000111002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221000111002 is a deficient number, since it is larger than the sum of its proper divisors (141417523430).

221000111002 is a wasteful number, since it uses less digits than its factorization.

221000111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21696933.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221000111002 its reverse (200111000122), we get a palindrome (421111111124).

The spelling of 221000111002 in words is "two hundred twenty-one billion, one hundred eleven thousand, two".