102220202221221 has 8 divisors (see below), whose sum is σ = 155764117670464. Its totient is φ = 58411544126400.

The previous prime is 102220202221169. The next prime is 102220202221223. The reversal of 102220202221221 is 122122202022201.

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

It is not a de Polignac number, because 102220202221221 - 2¹⁴ = 102220202204837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 4867628677201 = 102220202221221 / (1 + 0 + 2 + 2 + 2 + 0 + 2 + 0 + 2 + 2 + 2 + 1 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220202221223) 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, 2433814338580 + ... + 2433814338621.

It is an arithmetic number, because the mean of its divisors is an integer number (19470514708808).

Almost surely, 2^{102220202221221} is an apocalyptic number.

It is an amenable number.

102220202221221 is a deficient number, since it is larger than the sum of its proper divisors (53543915449243).

102220202221221 is an equidigital number, since it uses as much as digits as its factorization.

102220202221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867628677211.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 102220202221221 its reverse (122122202022201), we get a palindrome (224342404243422).

The spelling of 102220202221221 in words is "one hundred two trillion, two hundred twenty billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".