102202001001221 has 4 divisors (see below), whose sum is σ = 111493092001344. Its totient is φ = 92910910001100.

The previous prime is 102202001001103. The next prime is 102202001001227. The reversal of 102202001001221 is 122100100202201.

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 a de Polignac number, because none of the positive numbers 2^k-102202001001221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102202001001196 and 102202001001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102202001001227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4645545500045 + ... + 4645545500066.

It is an arithmetic number, because the mean of its divisors is an integer number (27873273000336).

Almost surely, 2^{102202001001221} is an apocalyptic number.

102202001001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102202001001221 is a deficient number, since it is larger than the sum of its proper divisors (9291091000123).

102202001001221 is an equidigital number, since it uses as much as digits as its factorization.

102202001001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9291091000122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102202001001221 its reverse (122100100202201), we get a palindrome (224302101203422).

The spelling of 102202001001221 in words is "one hundred two trillion, two hundred two billion, one million, one thousand, two hundred twenty-one".