221110001002 has 16 divisors (see below), whose sum is σ = 361827122400. Its totient is φ = 100501557840.

The previous prime is 221110000919. The next prime is 221110001003. The reversal of 221110001002 is 200100011122.

It is a self number, because there is not a number n which added to its sum of digits gives 221110001002.

It is not an unprimeable number, because it can be changed into a prime (221110001003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719749 + ... + 979927.

It is an arithmetic number, because the mean of its divisors is an integer number (22614195150).

Almost surely, 2^221110001002 is an apocalyptic number.

221110001002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221110001002 is a deficient number, since it is larger than the sum of its proper divisors (140717121398).

221110001002 is a wasteful number, since it uses less digits than its factorization.

221110001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298821.

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

Adding to 221110001002 its reverse (200100011122), we get a palindrome (421210012124).

The spelling of 221110001002 in words is "two hundred twenty-one billion, one hundred ten million, one thousand, two".