102220012101221 has 16 divisors (see below), whose sum is σ = 121904810092800. Its totient is φ = 83805866631168.

The previous prime is 102220012101191. The next prime is 102220012101283. The reversal of 102220012101221 is 122101210022201.

It is a cyclic number.

It is not a de Polignac number, because 102220012101221 - 2²² = 102220007906917 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102220012101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220002101221) 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, 370175 + ... + 14303043.

It is an arithmetic number, because the mean of its divisors is an integer number (7619050630800).

Almost surely, 2^{102220012101221} is an apocalyptic number.

It is an amenable number.

102220012101221 is a deficient number, since it is larger than the sum of its proper divisors (19684797991579).

102220012101221 is a wasteful number, since it uses less digits than its factorization.

102220012101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13978468.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102220012101221 its reverse (122101210022201), we get a palindrome (224321222123422).

The spelling of 102220012101221 in words is "one hundred two trillion, two hundred twenty billion, twelve million, one hundred one thousand, two hundred twenty-one".