102222001221 has 8 divisors (see below), whose sum is σ = 136606472640. Its totient is φ = 67992765312.

The previous prime is 102222001201. The next prime is 102222001247. The reversal of 102222001221 is 122100222201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102222001221 - 2⁶ = 102222001157 is a prime.

It is a super-2 number, since 2×102222001221² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102222001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222001201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38807340 + ... + 38809973.

It is an arithmetic number, because the mean of its divisors is an integer number (17075809080).

Almost surely, 2^102222001221 is an apocalyptic number.

It is an amenable number.

102222001221 is a deficient number, since it is larger than the sum of its proper divisors (34384471419).

102222001221 is an equidigital number, since it uses as much as digits as its factorization.

102222001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77617755.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102222001221 its reverse (122100222201), we get a palindrome (224322223422).

The spelling of 102222001221 in words is "one hundred two billion, two hundred twenty-two million, one thousand, two hundred twenty-one".