221001012220102 has 4 divisors (see below), whose sum is σ = 331501518330156. Its totient is φ = 110500506110050.

The previous prime is 221001012220067. The next prime is 221001012220243. The reversal of 221001012220102 is 201022210100122.

It is a happy number.

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, 55250253055024 + ... + 55250253055027.

It is an arithmetic number, because the mean of its divisors is an integer number (82875379582539).

Almost surely, 2^{221001012220102} is an apocalyptic number.

221001012220102 is a deficient number, since it is larger than the sum of its proper divisors (110500506110054).

221001012220102 is a wasteful number, since it uses less digits than its factorization.

221001012220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110500506110053.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221001012220102 its reverse (201022210100122), we get a palindrome (422023222320224).

The spelling of 221001012220102 in words is "two hundred twenty-one trillion, one billion, twelve million, two hundred twenty thousand, one hundred two".