221202022102 has 4 divisors (see below), whose sum is σ = 331803033156. Its totient is φ = 110601011050.

The previous prime is 221202022087. The next prime is 221202022103. The reversal of 221202022102 is 201220202122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202022103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55300505524 + ... + 55300505527.

It is an arithmetic number, because the mean of its divisors is an integer number (82950758289).

Almost surely, 2^221202022102 is an apocalyptic number.

221202022102 is a deficient number, since it is larger than the sum of its proper divisors (110601011054).

221202022102 is a wasteful number, since it uses less digits than its factorization.

221202022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110601011053.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221202022102 its reverse (201220202122), we get a palindrome (422422224224).

The spelling of 221202022102 in words is "two hundred twenty-one billion, two hundred two million, twenty-two thousand, one hundred two".