102202111001221 has 32 divisors (see below), whose sum is σ = 128685591141120. Its totient is φ = 78847561728000.

The previous prime is 102202111001197. The next prime is 102202111001279. The reversal of 102202111001221 is 122100111202201.

It is not a de Polignac number, because 102202111001221 - 2¹¹ = 102202110999173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102202111001195 and 102202111001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102202111001281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367472005 + ... + 367750021.

It is an arithmetic number, because the mean of its divisors is an integer number (4021424723160).

Almost surely, 2^{102202111001221} is an apocalyptic number.

102202111001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102202111001221 is a deficient number, since it is larger than the sum of its proper divisors (26483480139899).

102202111001221 is a wasteful number, since it uses less digits than its factorization.

102202111001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325405.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102202111001221 its reverse (122100111202201), we get a palindrome (224302222203422).

The spelling of 102202111001221 in words is "one hundred two trillion, two hundred two billion, one hundred eleven million, one thousand, two hundred twenty-one".