221202221102 has 16 divisors (see below), whose sum is σ = 346263364512. Its totient is φ = 105782038560.

The previous prime is 221202221087. The next prime is 221202221117. The reversal of 221202221102 is 201122202122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221202221087) and next prime (221202221117).

It is a congruent number.

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, 252452 + ... + 711432.

It is an arithmetic number, because the mean of its divisors is an integer number (21641460282).

Almost surely, 2^221202221102 is an apocalyptic number.

221202221102 is a deficient number, since it is larger than the sum of its proper divisors (125061143410).

221202221102 is a wasteful number, since it uses less digits than its factorization.

221202221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469483.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221202221102 its reverse (201122202122), we get a palindrome (422324423224).

The spelling of 221202221102 in words is "two hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, one hundred two".