102220201121221 has 4 divisors (see below), whose sum is σ = 102220365642592. Its totient is φ = 102220036599852.

The previous prime is 102220201121183. The next prime is 102220201121243. The reversal of 102220201121221 is 122121102022201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102220201121221 - 2¹⁹ = 102220200596933 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 (102220201124221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81325161 + ... + 82572526.

It is an arithmetic number, because the mean of its divisors is an integer number (25555091410648).

Almost surely, 2^{102220201121221} is an apocalyptic number.

It is an amenable number.

102220201121221 is a deficient number, since it is larger than the sum of its proper divisors (164521371).

102220201121221 is an equidigital number, since it uses as much as digits as its factorization.

102220201121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164521370.

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

Adding to 102220201121221 its reverse (122121102022201), we get a palindrome (224341303143422).

The spelling of 102220201121221 in words is "one hundred two trillion, two hundred twenty billion, two hundred one million, one hundred twenty-one thousand, two hundred twenty-one".