221000012002 has 64 divisors (see below), whose sum is σ = 456637077504. Its totient is φ = 77515511040.

The previous prime is 221000011987. The next prime is 221000012017. The reversal of 221000012002 is 200210000122.

It is an interprime number because it is at equal distance from previous prime (221000011987) and next prime (221000012017).

It is a self number, because there is not a number n which added to its sum of digits gives 221000012002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1774908 + ... + 1895335.

It is an arithmetic number, because the mean of its divisors is an integer number (7134954336).

Almost surely, 2^221000012002 is an apocalyptic number.

221000012002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221000012002 is an abundant number, since it is smaller than the sum of its proper divisors (235637065502).

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

221000012002 is a wasteful number, since it uses less digits than its factorization.

221000012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670303.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 221000012002 its reverse (200210000122), we get a palindrome (421210012124).

The spelling of 221000012002 in words is "two hundred twenty-one billion, twelve thousand, two".