221210002102 has 16 divisors (see below), whose sum is σ = 333580549392. Its totient is φ = 110016645120.

The previous prime is 221210002063. The next prime is 221210002109. The reversal of 221210002102 is 201200012122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210002109) 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, 3056478 + ... + 3128014.

It is an arithmetic number, because the mean of its divisors is an integer number (20848784337).

Almost surely, 2^221210002102 is an apocalyptic number.

221210002102 is a deficient number, since it is larger than the sum of its proper divisors (112370547290).

221210002102 is a wasteful number, since it uses less digits than its factorization.

221210002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79743.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221210002102 its reverse (201200012122), we get a palindrome (422410014224).

The spelling of 221210002102 in words is "two hundred twenty-one billion, two hundred ten million, two thousand, one hundred two".