221100010102 has 4 divisors (see below), whose sum is σ = 331650015156. Its totient is φ = 110550005050.

The previous prime is 221100010067. The next prime is 221100010127. The reversal of 221100010102 is 201010001122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55275002524 + ... + 55275002527.

It is an arithmetic number, because the mean of its divisors is an integer number (82912503789).

Almost surely, 2^221100010102 is an apocalyptic number.

221100010102 is a deficient number, since it is larger than the sum of its proper divisors (110550005054).

221100010102 is a wasteful number, since it uses less digits than its factorization.

221100010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110550005053.

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

Adding to 221100010102 its reverse (201010001122), we get a palindrome (422110011224).

The spelling of 221100010102 in words is "two hundred twenty-one billion, one hundred million, ten thousand, one hundred two".