102220201211221 has 16 divisors (see below), whose sum is σ = 103323554458560. Its totient is φ = 101123183387520.

The previous prime is 102220201211209. The next prime is 102220201211267. The reversal of 102220201211221 is 122112102022201.

It is a cyclic number.

It is not a de Polignac number, because 102220201211221 - 2¹⁵ = 102220201178453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220201211321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86014161 + ... + 87194473.

It is an arithmetic number, because the mean of its divisors is an integer number (6457722153660).

Almost surely, 2^{102220201211221} is an apocalyptic number.

It is an amenable number.

102220201211221 is a deficient number, since it is larger than the sum of its proper divisors (1103353247339).

102220201211221 is a wasteful number, since it uses less digits than its factorization.

102220201211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182996.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102220201211221 its reverse (122112102022201), we get a palindrome (224332303233422).

The spelling of 102220201211221 in words is "one hundred two trillion, two hundred twenty billion, two hundred one million, two hundred eleven thousand, two hundred twenty-one".