102221000101221 has 16 divisors (see below), whose sum is σ = 137198251598208. Its totient is φ = 67695547392000.

The previous prime is 102221000101217. The next prime is 102221000101229. The reversal of 102221000101221 is 122101000122201.

It is not a de Polignac number, because 102221000101221 - 2² = 102221000101217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102221000101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221000101229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70238085 + ... + 71678661.

It is an arithmetic number, because the mean of its divisors is an integer number (8574890724888).

Almost surely, 2^{102221000101221} is an apocalyptic number.

It is an amenable number.

102221000101221 is a deficient number, since it is larger than the sum of its proper divisors (34977251496987).

102221000101221 is a wasteful number, since it uses less digits than its factorization.

102221000101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597372.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102221000101221 its reverse (122101000122201), we get a palindrome (224322000223422).

The spelling of 102221000101221 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred one thousand, two hundred twenty-one".