102200010221221 has 4 divisors (see below), whose sum is σ = 111490920241344. Its totient is φ = 92909100201100.

The previous prime is 102200010221171. The next prime is 102200010221249. The reversal of 102200010221221 is 122122010002201.

It is a happy number.

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 102200010221221 - 2²¹ = 102200008124069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102200010221195 and 102200010221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102200010221021) 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, 4645455010045 + ... + 4645455010066.

It is an arithmetic number, because the mean of its divisors is an integer number (27872730060336).

Almost surely, 2^{102200010221221} is an apocalyptic number.

102200010221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102200010221221 is a deficient number, since it is larger than the sum of its proper divisors (9290910020123).

102200010221221 is an equidigital number, since it uses as much as digits as its factorization.

102200010221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9290910020122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102200010221221 its reverse (122122010002201), we get a palindrome (224322020223422).

The spelling of 102200010221221 in words is "one hundred two trillion, two hundred billion, ten million, two hundred twenty-one thousand, two hundred twenty-one".